Thomas Muller will not feature when Bayern Munich meet Borussia Dortmund on Saturday after continuing to suffer from COVID-19 symptoms, Julian Nagelsmann has revealed.

Joshua Kimmich, however, is in contention to return after recovering from the virus, as Bayern bid for a ninth consecutive win over their rivals.

Muller and Kimmich missed Tuesday's 5-0 Champions League win over Viktoria Plzen after testing positive for the virus last week, but both players have now returned negative tests.

However, Nagelsmann revealed on Friday that Muller was still experiencing symptoms and would miss the trip to BVB, although he was more positive regarding Kimmich's chances.

"Though they have both tested negative, Thomas Muller still has some cold symptoms, so he won't be in the squad," Nagelsmann said.

"Joshua Kimmich, everything looks good. He has no symptoms, he was asymptomatic the whole time. 

"He'll travel with the squad and then we'll see how far off he is after five days on the sidelines, whether he can feature in the starting lineup.

"It's a special game and that might mean there are special circumstances, but we'll see how training goes and how he feels.

"At the end of the day, both are now free from the constraints, which is good news."

With surprise packages Union Berlin and Freiburg setting the pace at the Bundesliga summit, Saturday's game will represent the first time in 13 years that neither Bayern or Dortmund has topped the league table ahead of a head-to-head meeting.

Though Dortmund's eight-match losing streak against Bayern is their joint- longest against any opponent in their history, Nagelsmann is wary of the threat posed by Edin Terzic's men. 

"They have made some good signings and have put together a strong team," he added. "Overall, I think they are having a solid season.

"They are a tough opponent and it will definitely be a good game. They're going to be a top opponent and it will be a really good game.

"We want to win more than anything. Dortmund like to defend deep and remain compact while waiting for opportunities to counter. They always have a clear shape when they counter.

"There's not really any sense of extra anticipation or tension, the preparations are the same. We don't want to let the tension come in too early, because if it comes too early, it can be hard to carry through."

Saturday's match will also see two of Europe's most highly rated prospects go head-to-head, as Bayern and Germany creator Jamal Musiala faces in-form England midfielder Jude Bellingham.

Nagelsmann praised both players as he hailed Musiala's development before adding: "Bellingham is having a very good season, he's very active, a different player to Jamal.

"He's more of a box-to-box player. With Jamal, it's all about the danger he can pose in front of goal, the passes he can play, and we're very happy that we have him.

"He has developed really well. He also developed well last season but didn't really hit that top level. Now, we're starting to see him do that.

"They both also have good standings in their national teams as well, so I think we can all enjoy the fact they are in the Bundesliga." 

Julian Nagelsmann feels Bayern Munich's resounding 5-0 win over Viktoria Plzen was "another step in the right direction" for his side ahead of facing Borussia Dortmund.

Bayern followed up Friday's 4-0 Bundesliga thrashing of Bayer Leverkusen with an even more emphatic victory in Tuesday's Champions League tie with Czech champions Plzen.

It marks the first time the Bavarians have won back-to-back matches in all competitions since August, having gone four league games without a win prior to the international break.

Nagelsmann is pleased with what he saw from his side against Plzen, with Bayern returning to form at just the right time ahead of Saturday's Klassiker showdown with fierce rivals Dortmund.

"The boys did well today," Nagelsmann told DAZN. "That's how you have to approach a game. We decided it quickly then controlled it. 

"With a view to Saturday, that was important, serious and well deserved. It was another game that shows we are taking steps in the right direction."

The hosts were three goals up inside 21 minutes, with Serge Gnabry and Sadio Mane netting after Leroy Sane had opened the scoring at the Allianz Arena.

Sane doubled his tally early in the second half before substitute Eric Choupo-Moting rounded off the scoring for the leaders in a one-sided Group C contest.

It is the 26th time Bayern have scored five or more goals in a Champions League match, which is five more than next-best Barcelona.

Mane wasted some promising chances to add to the scoring, netting from just one of his six attempts, but the forward was happy with his side's performance.

"The team played a great game, with a lot of chances created," he said. "We deserved to win. 

"The past few weeks have been tough. It was important we reacted. We reacted well after the international break. Hopefully we can continue like this until the end of the season.

"We have nine points from three Champions League games and a good goal difference. We are in a good place. 

"We were disciplined today. We were well prepared for the opponent and that's where most of the goals came from."

Bayern have now gone 31 games without defeat in the group stage of the Champions League, overtaking the record of 30 set by Real Madrid in 2017.

"We rightly received criticism during the international break," said Leon Goretzka, who set up two of the goals against Plzen.

"We used the time well and focused on our game again. Our aim is to perform on a regular basis. We're still extremely upset about the games before that."

Julian Nagelsmann may shuffle his pack for Bayern Munich's Champions League game against Viktoria Plzen on Tuesday, with the depleted Bavarians set to host Borussia Dortmund four days later.

Bayern have started their Champions League campaign with back-to-back wins over Inter and Barcelona, and lead the duo by three points at the top of Group C.

Should they record another European win at the Allianz Arena next time out, Bayern will have won their first three Champions League matches for a fourth season in succession.

On the domestic stage, however, Bayern trail surprise pace-setters Union Berlin and Freiburg after an inconsistent run of results, and host rivals Dortmund on Saturday.

With Thomas Muller and Joshua Kimmich set to miss the Plzen match after contracting COVID-19, Nagelsmann is aware of the need to manage his squad.

"We need to rotate because of Joshua and Thomas, so there are different ways, there are so many options," Nagelsmann said at his pre-match press conference.

"You'll see tomorrow which I decide. We're still in a situation where we need to grab points. 

"It's important for the Champions League to win the game against Plzen, and also to keep the rhythm for the game against Dortmund, where there might be more pressure than in the Champions League.

"Plzen like to play defensively and counter-attack, and that could be a challenge. We'll try to get into our optimum phase considering what is still ahead."

Bayern have been heavily impacted by COVID-19 recently, with Manuel Neuer and Leon Goretzka withdrawing from the Germany squad after contracting the virus last month.

Nagelsmann offered a positive update on the conditions of Muller and Kimmich, and hopes to have them back after Tuesday's match, adding: "Thomas and Joshua don't have any symptoms, they're doing well. Of course, they would love to play, but nothing has changed.

"We can do the tests on Friday and if those go well, they are candidates against Dortmund. It depends on the tests we will do.

"In general, the incidence is high in Munich so it's a factor that concerns us. We've talked with the players. 

"They've had the suggestion that they're not going to go to the Oktoberfest since the officials took part, so no partying there!

"Outside of the pitch, professional players are normal people. Everybody's looking after themselves."

Nagelsmann also revealed Kingsley Coman will not feature against Plzen despite recovering from a muscle injury, but said Serge Gnabry had his full support if selected to start out wide.

"First of all, with Kingsley, he is doing well," Nagelsmann said. "He practiced well, he was great, but he's not going to be a part of tomorrow's game.

"We'll try to heighten that [his condition] in the next couple of days and then he's an option against Dortmund, but he's not going to start, that's for sure.

"He is doing well. I have good expectations that he can fill a position in the squad against Dortmund, it would be great to have him, and not so great for the opponent.

"I haven't decided 100 per cent, but Serge is certainly a candidate there. We have to see also what we will do against Dortmund, and what happens with Thomas.

"I've known Serge for ages and I think a lot of him. He doesn't worry too much on the field and plays freely. We have a good connection with each other."

Bayern Munich proved they can handle the persistent pressure they face, Jamal Musiala said after a 4-0 win over Bayer Leverkusen that boss Julian Nagelsmann described as "satisfying".

The Bundesliga champions snapped a four-match top-flight winless streak with a rampant showcase at Allianz Arena.

Germany international Musiala got on the scoresheet, alongside Leroy Sane, Sadio Mane and Thomas Muller, as the hosts inflicted further misery upon their visitors, led by Gerardo Seoane.

Musiala acknowledged there is seldom an unburdened moment at Bayern, and that it is their resolve when under the microscope that helps them succeed.

"The pressure was on us all," he told DAZN. "We are focused on ourselves. We all want to win and be number one, and we showed that today. The pressure is always there at Bayern. We need to deal with it."

Nagelsmann meanwhile alluded to reports of dressing room unrest in his post-game comments.

"I've always said you can tell, when players leave the dressing room, if they respect the manager," he added.

"You can see in each game that the players are fully into it. That was very satisfying today."

Opposite number Seoane meanwhile was left to question how his Champions League side continue to slip towards the bottom of the Bundesliga table, with a leaky defence causing no shortage of problems.

"It is a question of will," he mused. "We didn't have the necessary aggression. It is a mental process."

Bayern Munich head coach Julian Nagelsmann says he cannot help but "take every criticism to heart", after a poor recent run of form led to questions over his position.

A 1-0 defeat to Augsburg last time out made it four Bundesliga games without a victory, dropping them to fifth in the table.

Some feel Bayern's streak of winning 10 league titles in a row is under threat, with them sitting five points behind early leaders Union Berlin, and there is also talk of sacked Chelsea boss Thomas Tuchel being a potential replacement for Nagelsmann if he was axed.

And Nagelsmann admitted he takes the negative assessments of him personally, telling reporters: "I take every criticism to heart. It's normal that the last two weeks have been tough.

"I am aware that I am not responsible for everything. I know that I invest a lot in the job. I claim to be an orderly person. Football is a very important part and an important passion for me. But it doesn't define me as a person."

Sadio Mane, brought in from Liverpool in the transfer window, is another Bayern man under fire, having scored three in three league games to start the season but failing to find the net in his last five for his new side in all competitions.

But his head coach is not worried about the Senegal international returning to form with his coaching staff's help, with Nagelsmann adding: "I have individual talks with all the players.

"In the end he has to help implement the plan, then he is a great support. In the end, it's the player's job to implement what the coach tells him to do.

"Then he will quickly find his way back to top form, I'm in good spirits. The performance is the responsibility of the coaching staff to get him where we want him to be."

Bayern are in action on Friday as they look to end their winless run, but will face a Bayer Leverkusen side who themselves are desperate for points, sat one place above the relegation zone having won just one league match this season.

Nagelsmann is expecting an improved performance from the defeat to Augsburg, commenting: "From my side, I expect that the players show what they're made of.

"I know that we haven't shown some things yet. It is still important to be brave. We still have to be aware that we are Bayern Munich.

"Leverkusen doesn't have an outstanding situation either, but it's a top game."

Julian Nagelsmann will turn around Bayern Munich's form after the international break and has the club's "full backing", sporting director Hasan Salihamidzic has pledged.

A run of three draws in the Bundesliga for Bayern was followed by a 1-0 defeat to Augsburg before many of Nagelsmann's players headed off on national team duty.

Bayern sit fifth after seven rounds of games, five points adrift of early pace-setters Union Berlin, and they face Bayer Leverkusen next.

Leverkusen have made a much worse start than Bayern, with the team that finished third in the Bundesliga last season winning just once so far this term.

But almost all the focus is on Bayern, who have won the last 10 Bundesliga titles, and Salihamidzic has admitted the early form is a concern, but something that can be resolved.

Salihamidzic told the Bild am Sonntag newspaper: "Julian is very clear. He and his team of coaches know exactly what to do.

"Above all, Julian knows that he has the full backing of FC Bayern, that doesn't have to be emphasised again and again."

Bayern's shot conversion rate in the Bundesliga has dipped from 14.41 per cent last season to 11.8 per cent this term, and it would be easy to point to the sale of Robert Lewandowski to Barcelona and suggest that has been a factor.

It might well be; however, there are signs that Bayern are doing plenty right.

They have already hit the woodwork seven times in seven games, three times more than any other side, which suggests they have been unfortunate. Over 34 games last season, they hit the woodwork 21 times.

Their goal tally is closely tracking their expected goals (xG) score, and both being league highs can be interpreted as another healthy sign. Bayern have netted 19 from an xG of 17.48, so they are exceeding expectations, based on the quality of chances they have had, over the course of the seven games. Last season they finished with 97 league goals from xG of 96.67.

A worrying sign is that Bayern have twice conceded a goal when an error has been committed, having done so only three times in the 2021-22 campaign.

Salihamidzic said Bayern chiefs had spoken to Nagelsmann about "all aspects" of the opening weeks of the season, including the encouraging Champions League group wins over Inter and Barcelona.

What is clear is that Bayern expect greater tenacity from the team after the disappointing derby effort against Augsburg.

"We will appear differently after the international break. And I expect that too," Salihamidzic said. "Physical intensity, greed and the willingness to push yourself to the limit in every game are the prerequisites for success."

Bayern Munich president Herbert Hainer has backed head coach Julian Nagelsmann, despite the German champions going four Bundesliga games without a win for the first time since the 2001-02 season.

Saturday's 1-0 defeat at Augsburg was Bayern's first loss of the campaign, but followed three domestic draws against Borussia Monchengladbach, Union Berlin and Stuttgart.

Bayern did win their first two Champions League group stage games against Inter and Barcelona (both 2-0), but sit fifth in the Bundesliga after seven games.

The club's chief executive Oliver Kahn had already provided his backing to Nagelsmann, saying on Sunday: "We always have the strength to get back to the front, where we belong, to the top of the table."

On Monday, Hainer added to that support, telling TZ: "Four Bundesliga games without a win at Bayern is, of course, not what our fans and all of us imagine.

"We see the multitude of goal chances that our team creates in every match and that are currently not reflected in our results.

"We are completely convinced of Julian Nagelsmann and our entire team."

Including the end of last season, Bayern have only won three of their last 10 Bundesliga games (D5 L2), though their final three outings of the 2021-22 campaign came after they had already sewn up a 10th straight title.

Despite that, Hainer added: "After the international break, we will attack again, as we know it from FC Bayern.

"The season has just started and we know we have the potential to achieve our big goals."

Bayern Munich CEO Oliver Kahn remains steadfast in his support of Julian Nagelsmann despite the club's poor sequence of form.

While Bayern have enjoyed a perfect start to their Champions League campaign, beating Inter and Barcelona, the defending Bundesliga champions have now gone four league matches without a win.

Defeat to Augsburg on Saturday has increased the perceived pressure upon Nagelsmann, though Kahn has made it clear the responsibility falls upon the players and not their head coach.

"We are totally convinced of Julian," he told Sport1, speaking at Oktoberfest in Munich.

"The coach gives the players enough solutions. I think that's quite normal: it's the team, the team is on the pitch. It's also about turning the chances we create into goals.

"I think that's the most important thing. That the team deals with the fact that we get so little return for making these opportunities.

"Maybe after the start, everything went so smoothly and easily, somewhere the belief took root that you could do the Bundesliga on the side.

"You have seen how strong the teams are against and at some point, we have to accept that.

"Thank God we are still at the very beginning of the season. We always have the strength to get back to the front, where we belong, to the top of the table."

Bayern host Bayer Leverkusen on their return to league action on September 30.

Bayern Munich sporting director Hasan Salihamidzic warned there can be "no more excuses" after defeat at Augsburg heaped pressure on head coach Julian Nagelsmann.

After three consecutive Bundesliga draws, Bayern were looking to get back on track in Saturday's Bavarian derby, but a 1-0 loss has compounded the team's domestic troubles.

It was only a first league loss of the season, but Bayern have now gone four games without winning in the competition, and the team that last season clinched a 10th consecutive title are in a mini-crisis.

It remains to be seen whether it escalates beyond that, or whether Nagelsmann succeeds in getting the team back to form, but Salihamidzic tellingly questioned the performance as much as the result.

His verdict was that Bayern "can't win in the Bundesliga like that", urging the team to show "discipline, greed and physicality", clearly suggesting they were lacking in each area.

Salihamidzic told German broadcaster Sky Sport: "We didn't finish the situations, several situations that we had, didn't finish in a concentrated manner, didn't play through to the end with a certain greed of wanting to score goals; and we also allowed a few chances against us, didn't defend those situations to the end, and we can't win in the Bundesliga like that."

Salihamidzic, a former Bayern player, said the current side are showing they have "brutal problems against teams that play against us physically, that knock our socks off, so to speak".

There has been no suggestion yet from Bayern that Nagelsmann's position is under threat, with early Champions League group wins against Inter and Barcelona surely helping his cause in that respect.

But he is facing scrutiny from outside the club, and the results in Germany's top flight are plainly causing unease in the Bayern hierarchy.

"If we don't bring that certain discipline, greed and physicality, then you can't win in the Bundesliga," Salihamidzic said. "Now there are no more excuses. Now we need wins."

Nagelsmann, the former RB Leipzig boss who is in his second season with Bayern, lost star striker Robert Lewandowski to Barcelona in the close season.

Lewandowski's de facto replacement, Sadio Mane, has managed five goals in 11 games across all competitions but has not found the net in his past five appearances.

As a collective, Bayern are not performing to their usual standard in the Bundesliga, and it falls to Nagelsmann to stop the rot.

Bayern's run of scoring in 87 consecutive Bundesliga games has been halted, and the coach has the international break in which to figure out what is so wrong.

Speaking after the final whistle in Augsburg, Nagelsmann said he was "thinking... about the situation, about myself, about everything".

Bayern Munich head coach Julian Nagelsmann cut a frustrated figure after seeing his team lose at Augsburg, saying he must think about "everything".

A goal from Mergim Berisha just before the hour at Augsburg Arena condemned Bayern to their first defeat of the season.

However, it made it four games in the Bundesliga without a win for the defending champions, their longest period without tasting victory in the league since the 2001-02 season.

Speaking at a press conference alongside Augsburg boss Enrico Maassen after the game, Nagelsmann praised the victors, but believed his team should still have won the game.

"Congratulations to Augsburg and Enrico for their victory against us," he said. "If I look at the statistics I think we should win that game, if we properly defend that free-kick [that led to the goal].

"It was difficult to break them down after it went to 1-0."

Bayern had 19 shots to the hosts' 11; however, according to Opta, Augsburg shaded it in terms of expected goals, by 1.56 to 1.52.

Few visiting players shone on Saturday, and it was another struggle for Sadio Mane, who only had one shot at goal, fewer even than Bayern goalkeeper Manuel Neuer (two) who came up for late set-pieces.

"I won't be talking about individual players here, I will speak to them directly," Nagelsmann said. "There's always a difference between what I tell you and what I tell the team."

Augsburg ended Bayern's record streak of 87 Bundesliga games with at least one goal, having done similar in 2014 when ending their Bavarian neighbours' previous record streak of 65 games with a goal.

That, naturally, led to questions about former striker Robert Lewandowski, who scored twice for Barcelona in their 3-0 win over Elche in LaLiga at the same time Bayern were losing at Augsburg.

On the question of missing a number nine, Nagelsmann quipped: "What will you do if I say 'yes' or if I say 'no'? We have the classic nine with [Eric Maxim] Choupo [Moting] and we subbed him in today.

"It doesn't matter what I say now. If I say 'no' you’ll say I don't see the problem, if I say 'yes' you’ll say we're missing Lewandowski."

At the end of the press conference, Nagelsmann added: "I'm thinking about all things. About the situation, about myself, about everything."

His opposite number was grateful for the kind words, and Maassen explained his team had won by taking risks.

Although Bayern had 10 shots to the hosts' two in the second half, Augsburg matched their efforts in the first 45 minutes when both recorded nine shots each.

"Thanks to Julian [for his congratulations]," Maassen said. "I'm very pleased with how my team played.

"We were willing to take risks, I told the team we could defend and maybe lose 1-0 or 2-0, or we could play high-risk. We could concede more goals, but we'd also have a chance to win, and you have to attack if you want to try and beat them, so we ran after plenty of balls.

"We gave away a lot of chances, but [goalkeeper Rafal] Gikiewicz was tremendous."

Bayern Munich head coach Julian Nagelsmann says Sadio Mane has his "full backing" after coming in for criticism in recent weeks.

Mane started well following his move from Liverpool, scoring three goals in his first three Bundesliga appearances, but he has not netted in the league since while Bayern have been held to three consecutive draws.

In the midweek Champions League victory over Barcelona, Mane was substituted with 20 minutes to play having failed to attempt a shot or create a chance.

This apparent slump was put to Nagelsmann ahead of Saturday's game at Augsburg, but the coach is not concerned.

"It's quite normal that you are dissatisfied at first when things are not going well," Nagelsmann said on Friday. "He does a lot of self reflection and knows when he's played well and when he's maybe not played so well.

"He will produce his best again. He has my full backing and will score and assist plenty more goals for us."

Another recent addition who is struggling to make an impact is midfielder Ryan Gravenberch, with just one start in the DFB-Pokal since his move from Ajax, and Nagelsmann has outlined where the 20-year-old needs to improve.

"He has played too few games for his abilities, which is also due to the competition," Nagelsmann said. "First of all, you need a basic structure, which we had with Sabi [Marcel Sabitzer] and Josh [Kimmich].

"Now Leon [Goretzka] is back, who did very well against Barca. He has a lot of competition. He can also play further forward, but the competition is not small. He is a young player who needs acclimatisation time.

"He is incredibly talented. Defensively, he still has to take a few steps. That's why he plays a bit less. We need a good balance in the position. He knows that defensively he still has to work a bit harder.

"Sometimes he struggles a bit too much for me with mistakes. That's why he always has a second of thought in counter-pressing, where he is annoyed that the ball is gone. But he has already developed. I'm sure he'll play a lot with us."

Leon Goretzka says he is "annoyed" by reports about unrest within the Bayern Munich squad which he claims are not true.

Bayern and head coach Julian Nagelsmann have come under pressure following three straight Bundesliga draws, but they maintained their winning start in the Champions League with a 2-0 victory over Barcelona on Tuesday.

There have been reports of friction within the Bayern squad towards Nagelsmann, with issues including rotation and game time.

Goretzka came off the bench at half-time and played a key role in Bayern's win over Barcelona, with both goals coming in the second half. The appearance was only the 27-year-old midfielder's fifth of the season in all competitions after missing six weeks late in pre-season following knee surgery.

Bild claimed this week that the Germany international, along with new Dutch addition Ryan Gravenberch, were unhappy with their playing time this season, with the former specifically irritated when he learned he was not starting against the Blaugrana.

The report claimed that Goretzka felt his training performances warranted a starting position but Nagelsmann preferred Marcel Sabitzer in midfield to offer defensive stability to allow Joshua Kimmich to be more offensive minded.

"I promised myself that I'd not say anything about it because my words might be interpreted in a different way," Goretzka told reporters after Tuesday's win. "I have no problem with the coach not starting me today.

"I was out for six weeks and it was clear that I wouldn't play from the start. Sabi did a great job.

"These alleged problems in the dressing room are conveyed in a way that really annoys me. We get along really well in the team."

Leroy Sane, who netted Bayern's second goal in the 54th minute, threw a bottle in frustration after being substituted off in the 80th minute.

Sane embraced Nagelsmann along with teammates on the bench before throwing the bottle and going down the tunnel.

"I wasn't angry about my substitution," Sane explained.

"The bottle had to suffer a bit because I didn't play a good game. The goal was nice, but I wasn't entirely happy with my performance today."

Bayern Munich goalkeeper Manuel Neuer believes his side were "lucky" not to concede to Robert Lewandowski on his return to Bavaria.

The Poland international has been in sensational form since joining Barcelona, scoring a hat-trick on his Champions League debut for the Blaugrana against Viktoria Plzen last week, but he was unable to add to his tally at the Allianz Arena.

Lewandowski was thwarted by former team-mate Neuer from a close-range header after he had squandered an opportunity on the volley, blazing his attempt over the crossbar.

Both chances could have easily been taken by Lewandowski, and Neuer admitted that Bayern had benefitted from good fortune in their 2-0 victory.

"I think it was an emotional game for Lewy because he was very successful here in Munich. But we also know him as an opponent. Luck was not on his side in crucial moments," he told reporters.

"We're lucky that he sent that volley over the bar and I was there in the second chance. We showed a good defensive performance today."

Julian Nagelsmann also thought Lewandowski performed well despite failing to find the back of the net, acknowledging the majority of the pre-match talk centred on Bayern's reunion with the striker.

"I think he played a good game, I'm happy from our perspective that he didn't score. We saw that he was dangerous, we were able to defend him very well," he said.

"I saw him after the game and hugged him but he plays for a different club now, I have a lot of players I have to look out for.

"This week, I probably had 60 questions on Lewandowski, you can pose those questions to Xavi because he's not my player anymore."

Barcelona head coach Xavi, meanwhile, believes Lewandowski did not get overwhelmed by the occasion, stating: "I don't think he could have been pressured, with his maturity and experience. 

"It is a lack of effectiveness. It's football and this happens. And it happens in the stadium where it couldn't happen."

Bayern Munich head coach Julian Nagelsmann praised the second-half turnaround of his side in their 2-0 Champions League victory over Barcelona.

Manuel Neuer was called into action twice in the opening 45 minutes on Tuesday to deny former teammate Robert Lewandowski, with Barcelona having 10 attempts on goal in the first period – the highest first-half tally of any visiting side to the Allianz Arena in the competition since Fiorentina's 11 in October 2008.

Bayern improved after the break, though, taking the sort of opportunities Barcelona had squandered with Lucas Hernandez scoring from a corner and Leroy Sane quickly doubling the scoreline.

Nagelsmann was encouraged by the response of his side and their ruthless nature in the final third, having struggled in that regard in recent Bundesliga draws with Stuttgart and Borussia Monchengladbach.

"In the first half, we left the centre open a little bit too much," Nagelsmann said. "We didn't really have the best opportunities, but we had three or four great wins of the ball where Jamal [Musiala] didn't realise how open he was.

"Barca had the better chances because we were missing the final chance. Still, we can rely on Manuel Neuer who could save some great shots.

"In the second half, we were able to defend a lot better because we looked at a couple of things during the break; I was very happy with that.

"We were able to score that first goal from the corner, then we were able to score the second quickly after – we were able to open up Barcelona.

"It wasn't always easy to defend. We were strong in the second half, they were strong in the first half; we had those situations that we were able to show that we didn't show against Stuttgart or Gladbach, and in the end we won."

Although Bayern were able to secure what may prove to be a valuable victory, having already beaten Inter in this group stage, Sadio Mane had a quiet night, failing to attempt a shot or create a chance for a team-mate.

But Nagelsmann said: "He played a new position today that he didn't play as much in the last year at Liverpool. It's just normal with a new player who we still have to integrate, who is in a different team.

"I said last week: I'm hoping he pulls a couple of things to him and gets a little bit more confidence. We're very happy to have him, and we're trying to get him into our game."

It is not a reunion that any Bayern Munich fan will be relishing when Robert Lewandowski returns to the Allianz Arena on Tuesday.

Just a few months ago they were cheering goal after goal the Poland striker was scoring for their team, something he had done with tremendous consistency ever since arriving from Borussia Dortmund.

Then came the news none of them will have wanted to hear, that Lewandowski wanted a new challenge.

After a surprising amount of unpleasantness between player and club during the transfer window, the 34-year-old got his wish and made the move to Barcelona for a reported fee of €50million.

With a sense of inevitability as the balls were opened by former Barca midfielder Yaya Toure during the draw for the group stage of the Champions League, who should Bayern be joined by in Group C along with Inter and Viktoria Plzen? Of course, Barcelona.

Ahead of Lewandowski lining up on the opposing side in Munich, Stats Perform has taken a look at what he achieved at Bayern, and how both parties have adapted in the early stages of the new campaign.

The man they called "Lewan-goal-ski" (well, Thomas Muller did)

Of course, Bayern could not feel too bad about having their main goalscorer taken from them, considering that is exactly what they did to chief Bundesliga rivals Dortmund when they signed Lewandowski on a free transfer in 2014.

Inevitably, it turned out to be a key move as BVB fell away after struggling to replace him, while Lewandowski went on to score an exceptional number of goals at his new home.

Overall, he scored 344 goals and recorded 57 assists in 375 appearances for Bayern, and in the 2020-21 campaign, he broke Gerd Muller's long-standing Bundesliga record by scoring 41 times in a single season, while his 43 league goals in 2021 serve as the record for a calendar year in Germany's top tier.

Last season, Lewandowski scored 50 goals across all competitions, the most across Europe's top five leagues, as Bayern lifted their 10th Bundesliga title in a row.

In all, he won eight league titles, three DFB-Pokal's, as well as a Champions League, UEFA Super Cup and FIFA Club World Cup.

After that, it was 'Lewan-gone-ski', as team-mate Thomas Muller may well have called him after his departure, before holding far too long for applause.

What is 11 minus a nine?

With arguably the best number nine in the game gone, Bayern head coach Julian Nagelsmann wanted to evolve his team, making them less reliant on one figure for so many goals and spreading the responsibility.

Sadio Mane joined from Liverpool as the de facto replacement, and before the DFL-Super Cup win against RB Leipzig, Nagelsmann admitted: "When we agreed to Barcelona's offer [for Lewandowski], it was planned that we might not sign anyone else for this position."

The theory was that the likes of Mane, Leroy Sane, Kingsley Coman and Serge Gnabry, fresh from signing a new contract, could increase their output in front of goal, while the ever reliable Muller and the increasingly promising Jamal Musiala would also be potent sources.

Things certainly started well enough with a 5-3 win against Leipzig, followed by a 6-1 thrashing of Eintracht Frankfurt in their opening Bundesliga game.

After a 2-0 victory at home to Wolfsburg, Bayern put seven past Bochum and talk of a lack of goals could not have been further from anyone's lips.

However, three draws in a row in the league against Borussia Monchengladbach, Union Berlin and Stuttgart have followed, which has seen Union emerge as the surprise Bundesliga leaders after six games.

In those games, Bayern have scored a total of 19 goals, with 10 different scorers, registering 12 points in the Bundesliga.

By comparison, in their first six league games last season when Lewandowski was still front and centre for them, they scored 23 goals, though with only seven different scorers, and the Pole providing seven goals of his own, and had 16 points after five wins and just one draw.

In their opening Champions League game, though, Nagelsmann's men put in a terrific performance as they beat Inter 2-0 at San Siro, with their second goal in particular showcasing the sort of passing and moving around the box that feels more possible when you don't have an orthodox number nine as the obvious target.

Lewandowski picks up in Spain where he left off in Germany

Though it took a bit of, shall we say, moving things around so Barcelona could register their new star striker, along with a number of other signings in the transfer window, there has been very little adaptation needed for Lewandowski in LaLiga.

He has already scored six goals in his first five league games, making him the fastest player to reach that figure in the competition in the 21st century.

The forward also has two assists, which makes him the joint-fastest to have been involved in eight goals in the 21st century, alongside former Barca players Rafael van der Vaart in 2008 and Cesc Fabregas in 2011.

Lewandowski also added three more goals to his impressive total in the Champions League with a hat-trick in Barca's 5-1 win against Viktoria Plzen at Camp Nou last week.

That made him outright third in the competition's all-time leading scorers with 89 goals in 107 appearances, behind only Lionel Messi (125 goals in 157 games) and Cristiano Ronaldo (140 goals in 183 games).

Of course, Lewandowski has recent history of this fixture, playing for Bayern as they beat Barca 3-0 home and away in last season's Champions League group stage, scoring twice in the first game in Spain.

It played a big part in the Catalan giants being dumped out of the competition at that stage for the first time in over 20 years, but with Lewandowski on board, Xavi's side will be hoping he can fire them to the round of 16 and beyond, just as he did so regularly for Bayern.

Lewandowski has already started to do so with his treble against Plzen, but will he be able to make an impact again when he faces his former club, or will Bayern be able to prove they have started to move on without him?