Bayern Munich have rarely been shy about coaxing players to cross the divide and make the move from Der Klassiker rivals Borussia Dortmund.

Their willingness to do so ensured Dortmund's last spell at the top of German football, when a vibrant young side gegenpressed their way to a Bundesliga and DFB-Pokal double in 2011-12 and a Champions League final a year later, was an ephemeral one, Robert Lewandowski and Mario Gotze each making the move to Bayern in 2013 and experiencing varying degrees of success.

And the build-up to the most famous fixture in Germany was partially defined by Bayern seemingly beginning a charm offensive to attract one of Dortmund's most prized assets, Erling Haaland, to eschew potential moves elsewhere in favour of following Lewandowski's path.

"Haaland is what a centre-forward has to be," Bayern coach Hansi Flick said in his pre-match media conference. "He has an enormous hunger for goals. The future could belong to him because he has everything he needs for it."

The Norway forward's agent, Mino Raiola, has claimed only 10 clubs in the world would be able to afford to sign Haaland, who has a release clause that does not become active until 2022.

But Bayern president Herbert Hainer told Sport1 this week: "We will go even more down our successful path of signing young players with outstanding skills. We are an economically very strong and healthy club.

"Although we're also suffering massively from the pandemic, we can always bring in players when we're convinced about them."

Bayern clearly have no doubts about their financial capability to sign Haaland, and they may be convinced to make a concerted push to do so after his first-half salvo in Saturday's Klassiker, which forced Flick's men to produce a stirring comeback.

Haaland had two games without a goal prior to Dortmund's trip to the Allianz Arena.

He ended that 'drought' in the space of a minute and 14 seconds, taking a few touches to steady himself on the edge of the Bayern box and power an effort that deflected off Jerome Boateng beyond Manuel Neuer and into the bottom-right corner.

Fewer than eight minutes later, he made it 2-0, his goalscorer's instinct again shining through with a much more simple finish as he popped up in the box to turn home Thorgan Hazard's pull-back from point-blank range at the end of a wonderful Dortmund move.

His double took his tally against Bayern for the season to four goals, but he would ultimately be denied the chance to become the first player since Cristiano Ronaldo (5) in 2016-17 to score more than four in a season versus Die Roten.

A second-half ankle injury forced Haaland off, the looming second leg of their Champions League last-16 tie with Sevilla likely playing a role in his withdrawal on the hour.

That blow followed a first-half fightback from Bayern, which was fuelled by a predictable source in Lewandowski, who diverted a shot-turned-cross from Leroy Sane into the net before rolling home a penalty after Mahmoud Dahoud's foul on the ever influential Kingsley Coman, taking his tally of Bundesliga goals against Dortmund to a league-record 19.

Dortmund's rearguard action in a one-sided second half looked set to frustrate Bayern and keep RB Leipzig top of the Bundesliga.

But their resilience wilted late on, Schalke product Leon Goretzka hitting home on the volley in the 88th minute and Lewandowski making it 20 against his former club by completing his hat-trick with an unerring finish from the edge of the area.

It was the kind of rapid collapse from Dortmund that illustrated why Haaland, having hastily adapted to life in the Bundesliga following his move from Salzburg last year, could be keen to make a swift departure to a team better prepared to compete at the sharp end of European football, even with the highly touted Marco Rose set to take over as coach next season.

Dortmund are four points behind Eintracht Frankfurt in the race for the top four, and have a fight on their hands if they are to secure Champions League qualification for next season.

Haaland appeared set to steal the show 10 minutes into this storied fixture, but his 20-touch contribution was ultimately overshadowed by the man who reigns supreme as the Bundesliga's most potent goalscoring threat.

With Lewandowski maintaining this kind of form, Bayern have no rush to find the successor for a player under contract until 2023.

But after Haaland produced two goals from a game where had four touches in the box, his supporting role in the latest thrilling episode of this classic rivalry could compel Bayern to open the chequebook and add to what is arguably European football's most extensive embarrassment of riches.

Jamal Musiala has signed his first professional contract with Bayern Munich.

The rising Germany star has pledged his future to the Bundesliga champions until 2026, just a week after turning 18.

Musiala has made swift progress since joining from Chelsea two years ago and has made 26 appearances in all competitions this season for Hansi Flick's side.

At 17 years and 363 days old, he became Bayern's youngest Champions League goalscorer when he netted in the 4-1 last-16 first-leg win over Lazio.

"I'm really pleased to have signed my first professional contract at FC Bayern," Musiala said via the club's website. "I just feel very good at the club and in the team, I'm playing with the best players in the world and I can learn from them every day in training.

"Hansi Flick, [sporting director] Hasan Salihamidzic and [chief scout] Marco Neppe, along with the whole club, have believed in me and given me the chance very early on.

"I just want to repay that faith with good performances, keep getting better and win a lot more titles with FC Bayern. My aim is to become an important player for this club."

Salihamidzic said: "We're very happy that Jamal has decided to sign his first professional contract at FC Bayern on a long-term basis. This has been a joint effort.

"Before Jamal came to FC Bayern in summer 2019, we had to and were able to convince him and his family about our project. I am very pleased that our system of finding talented players, developing them and then integrating them into the first team is bearing fruit.

"Our chief scout Marco Neppe has played a significant role here. Now we must all ensure that Jamal continues to be nurtured and challenged. I am sure that he will bring a lot of joy to FC Bayern."

Musiala, who last month declared he will play for Germany at senior international level, has been tipped for a call-up to Joachim Low's squad for the coming international break.

When Borussia Dortmund parted with a reported €20million to sign Erling Haaland from Salzburg a little over a year ago, they'll have been acutely aware of the coup they'd just struck – but whether they expected him to be quite this good is another matter entirely.

Those explosive first few months of the 2019-20 season at Salzburg left most of Europe's biggest clubs clamouring for the Norwegian, but Bayern were seemingly not among them. At least, not in the final straight.

While you can't necessarily have too many great players, few at the time or since have decried Bayern's lack of interest in the striking sensation, and that purely comes down to the presence of Robert Lewandowski.

Eleven months on from Haaland's Dortmund debut, Lewandowski won the FIFA Best Men's Player award having scored 60 goals across the qualifying period and led Bayern to a treble.

But the fact Haaland - named the Golden Boy soon after - was seen as unfortunate not to be nominated for the major gong ultimately won by Lewandowski is testament to the former Molde youngster's frightening potential.

Saturday's Der Klassiker is unlikely to have much bearing on Dortmund's Bundesliga title hopes given they'll still be 10 points behind Bayern even if they win, but the game does provide the opportunity to see the two sharp-shooters pitted against each other, like gunslingers in an old Western movie.

Haaland, along with Kylian Mbappe, is being outlined as the world's next great number nine, but is he already ahead of even Lewandowski?

LEWY'S LONG ROAD

It's easy to forget Lewandowski's backstory and route to the top, simply because he has been one of Europe's most-feared strikers for so long.

But Lewandowski's tale is one of rejection, perseverance and mastery – to say he always looked destined to reach the level he has would be revisionist. After all, the early years of his career in Poland were impacted by the death of his father, being cast aside by Legia Warsaw, a serious injury and failed transfers.

Sporting Gijon turned him down and the 2010 eruption of Icelandic volcano Eyjafjallajokull resulted in the collapse of a move from Lech Poznan to Blackburn Rovers.

He joined Dortmund in June of that year, a couple of months before his 22nd birthday – by comparison, Haaland was still six months from turning 20 when he signed for BVB.

On top of that, Haaland's early impact on the Bundesliga has been far superior to that of Lewandowski, whose first season yielded only nine goals in 42 games across all competitions. The Norwegian managed 24 in 27 matches.

Looking at that alone, it's easy to make the assumption that Haaland is destined for even greater things than Lewandowski, but it's worth pointing out the Pole was played out of position a lot in his first campaign.

"I was annoyed having to play as a number 10 instead of playing up front as the number nine," Lewandowski told the Daily Mail in 2016. "I played the whole season as number 10. The following season I thought about why I was in that position, then I realised my game had improved. I learned a lot and, when I played up top again, I realised playing as a number 10 had made me a better player."

The data backs him up as well. Not only did his overall productivity in front of goal improve from nine goals to 30, he was proving more consistent generally in those decisive moments, his conversion rate increasing from 8.5 per cent to 19.5.

DIFFERENT BEASTS

When looking at – or comparing – any player in relation to Lewandowski, you have to consider the two different versions of him; pre-26 and post-26.

It was around this age that Lewandowski began to harness the fitness and nutrition expertise of his wife Anna, and it's quite easy to spot when that appeared to start paying dividends, as his goals haul rocketed from 25 to 42 in 2015-16.

He has not gone below 40 in any full season since then and already has 34 to his name in 2020-21 (32 appearances) – he is also just four behind Klaus Fischer (268), the second most-prolific player in Bundesliga history.

Haaland's long-term future isn't at Dortmund and, by extension, doesn't appear to be in the Bundesliga, so matching Lewandowski's record in Germany's top-flight looks unlikely.

But what's clear is he has found this 'world-class' level much earlier than Lewandowski – Haaland has more goals (55) across all competitions than any other current under-21 player in Europe's top five leagues despite playing just 57 games. Jadon Sancho is his closest rival with 46 in 130 appearances.

Haaland's first Bundesliga season with Dortmund saw him score 13 times, outperforming his expected goals (xG) by 4.2 – that's a greater differential than Lewandowski has recorded since 2016-17 (7.8), though the youngster's figure here has dropped to 2.5 in 2020-21.

While that is 0.7 less than Lewandowski's 3.2 xG differential, either way he's scoring a lot of goals and more than he would ordinarily be expected to over a long period of time, which speaks for his clinical nature.

Further to that, Haaland – who earlier this term became the youngest player to net four in one Bundesliga game (20 years, 123 days) – boasts a stunning conversion rate at Dortmund. Last season's 41.4 per cent (all competitions) is better than Lewandowski has ever managed, though it was of course limited to half a season.

In 2020-21 he hasn't quite found the same standard, yet his 29.7 conversion rate in all competitions is still better than any other Bundesliga player with 10 goals or more. By comparison, Lewandowski's 28.3 per cent will be a career-high for a single season if he maintains it.

BRILLIANCE IN LONGEVITY

At the very least, Haaland is already a contemporary of Lewandowski's – his effectiveness in front of goal is utterly devastating and, as demonstrated, seemingly a level above that of the Bayern talisman during his early Bundesliga days.

But the challenge for Haaland is to maintain that level and keep kicking on, as Lewandowski clearly did around the age of 26 when analysing what he could do better, taking himself from an excellent number nine to arguably the best of his generation.

Haaland is building from a higher platform than Lewandowski ever was, therefore one has to suspect he has the potential to surpass his exploits.

Maybe he could be this generation's standard-bearer. If he has half the amount of perseverance as Lewandowski, that'd be a good start.

As for whether he's already better than Lewandowski – well, part of the Bayern man's brilliance is his longevity and consistency, how he seems to be getting better with age. But for Haaland to be rivalling the world's best before he's even 21 is an achievement in itself.

Jadon Sancho can be compared to Robert Lewandowski and Lionel Messi with his performances for Borussia Dortmund, according to former Germany international goalkeeper Jens Lehmann.

After a slow start to the campaign amid talk of a move to Manchester United falling through, Sancho's form has picked up of late and he is on course to hit double figures for goals and assists for the third Bundesliga season running.

The England international last week registered his 50th assist in the German top flight, becoming the youngest ever player to do so in what was his 99th appearance in the competition.

Sancho has now been directly involved in 12 Bundesliga goals in 2021 - six goals and six assists - which is behind only Bayern Munich striker Lewandowski (11 goals and two assists).

In Europe's top five leagues, Barcelona forward Messi (15) is the only other player to have been directly involved in more goals this calendar year than Sancho, who is level with Atalanta's Luis Muriel.

Lehmann has been impressed by the 20-year-old's form and has backed the youngster, as well as compatriot and BVB team-mate Jude Bellingham, to remain in the Bundesliga, despite ongoing talk of a possible move to the Premier League.

"He's done very well," Lehmann told the Daily Star. "Right now his stats can be compared to Lionel Messi and Robert Lewandowski, and I think the third best in the whole of Europe. It's fantastic for English football."

Asked about the future of Sancho and Bellingham, Lehmann said: "Right now, I think they're staying. Most of the big clubs have full squads anyway.

"You'd have to be really, really outstanding if a bigger club tries to get you. But if you can imagine a club like Chelsea, Manchester United or Manchester City, there is already 30 or 35 players plus the players on loan.

"It's not that easy to make a decision for guys like Bellingham and Sancho at this early stage in their careers. Would they add something? We're not sure, but first of all they need to decrease their own squad size."

Sancho, who scored the winning goal for Dortmund in their DFB-Pokal win at Borussia Monchengladbach on Tuesday, is a major doubt for this weekend's Der Klassiker showdown with Bayern due to a leg injury.

Bayern Munich would have the financial strength to sign Erling Haaland, club president Herbert Hainer says. 

Borussia Dortmund striker Haaland is likely to be one of the most in-demand players over the coming transfer windows as he continues to thrive at Signal Iduna Park. 

Haaland has scored 27 goals and provided seven assists in 27 games in all competitions this season. Among Bundesliga players, only Robert Lewandowski (42) has more direct goal involvements. 

Real Madrid, Manchester City, Chelsea, Manchester United and Barcelona have all been linked with the 20-year-old, while former Germany star Lothar Matthaus suggested Haaland's next logical step would be to join Bayern if he chooses to stay in Germany. 

A release clause of €75million will reportedly come into effect next year, and Hainer believes Bayern will be in a position to compete with others for Haaland's signature despite the financial impact of the coronavirus pandemic. 

Insisting Bayern will "go even more down our successful path of signing young players with outstanding skills", having already agreed a deal to bring in Dayot Upamecano from RB Leipzig this year, Hainer told Sport1: "We are an economically very strong and healthy club. 

"Although we're also suffering massively from the pandemic, we can always bring in players when we're convinced about them." 

Hainer also confirmed plans to discuss new contracts with midfielder Leon Goretzka and defender Niklas Sule, whose deals expire in 2022. 

Goretzka has regained form recently after recovering from a coronavirus infection, while Sule, who had been linked with Chelsea, has enjoyed a positive run as a makeshift right-back. 

"Leon Goretzka has developed hugely in the last 12 months," said Hainer. "He's become one of the most important players for us. Yes, we want to extend with him." 

He added of Sule: "He's an important player for us. We'll sit down with him in the spring."

Jadon Sancho and Raphael Guerreiro will be assessed before a decision is made on whether they can play any part in Borussia Dortmund's Bundesliga showdown with rivals Bayern Munich.

England international Sancho hobbled off the pitch two minutes after scoring what proved to be the winning goal in Tuesday's 1-0 DFB-Pokal quarter-final win against Borussia Monchengladbach.

He watched the final 22 minutes from the bench with an ice pack on his upper leg, with interim head coach Edin Terzic confirming after the match the 20-year-old had sustained a muscular issue.

Guerreiro, used 29 times in all competitions this season, limped off in the opening five minutes of the cup tie and both players are now doubtful for Saturday's Klassiker at the Allianz Arena.

"Jadon and Raphael were examined immediately after the Gladbach game and we have to carry out further examinations," Terzic said at a pre-match news conference on Thursday.

"It could be tight for both of them, but we're not giving up hope that they will fly to Munich with us tomorrow."

Being without Sancho would be a major blow for Dortmund, who are looking to avoid losing a fifth league game in a row against Bayern for the first time since between 1968 and 1970.

After a largely underwhelming first half to the campaign, the attacking midfielder has been directly involved in 12 Bundesliga goals in 2021, finding the net six times and setting up six more.

Only Bayern striker Robert Lewandowski has scored and assisted more this calendar year (13 in total – 11 goals, two assists), with Eintracht Frankfurt duo Filip Kostic and Andre Silva next on the list with 10 goal involvements apiece.

Lewandowski has 28 Bundesliga goals to his name in total this campaign - just 12 short of Gerd Muller's long-standing record in a single season - for a Bayern side on a 36-game run since last failing to score in the league.

No team in Europe's top five leagues has found the net more times than Bayern (67) in 2020-21 and Terzic, who will be replaced by Marco Rose at the end of the campaign, acknowledged his side will have to be alert at the back this weekend.

"It is clear that the toolbox of the opposition is very large," he said. "We will try to support each other and block the flanks and cover the posts. 

"They score a lot of goals. It would be best if we don't let them get into the final third of the field.

"There will be phases where we have to suffer. That counts when you play in Munich, but it does not rule out being brave yourself and being dangerous. Small things will make the difference in such close matches."

Erling Haaland continues to dominate headlines.

The Borussia Dortmund sensation is one of the most sought-after players in Europe.

Manchester City and Real Madrid are reportedly going head-to-head to sign the Norwegian.

TOP STORY – AGUERO OUT, HAALAND IN?

Manchester City want to sign Borussia Dortmund star Erling Haaland as a replacement for veteran forward Sergio Aguero, according to Bild.

Aguero, who has been hampered by injury this season, is out of contract at the end of the current campaign.

Haaland is a player in demand, having been linked to Manchester United, Real Madrid, Barcelona, Liverpool, Chelsea, Paris Saint-Germain, Juventus and Bayern Munich.

But Haaland dominates the front pages of Thursday's Marca, Diario AS and Mundo Deportivo in Spain amid Madrid's interest.

The Norway international reportedly wants to listen to Madrid, who will need €150million to prise Haaland to the Santiago Bernabeu.

ROUND-UP

- Calciomercato reports Lyon star Houssem Aouar remains on the radar of Juventus. Aouar has previously been linked with the Serie A champions, as well as Arsenal.

- Chelsea are interested in Monaco's defensive midfielder Aurelien Tchouameni, claims ESPN.

- O Jogo says Liverpool could reignite their interest in Sporting CP defender Nuno Mendes. Juve, Madrid and Milan have also been tracking the 18-year-old, who has a £60m (€70m) release clause.

- Edinson Cavani is open to extending his United contract, according to Fabrizio Romano. Cavani joined United as a free agent on a one-year deal at the start of the season. The former PSG star has been linked with Boca Juniors.

Could Gianluigi Donnarumma swap Milan for London?

Donnarumma's future with Serie A outfit Milan is far from certain as he prepares to become a free agent.

While Chelsea already boast Edouard Mendy and Kepa Arrizabalaga in their goalkeeping ranks, the Premier League giants are reportedly interested in Donnarumma.

TOP STORY – CHELSEA EYE DONNARUMMA

Chelsea are monitoring Milan goalkeeper Gianluigi Donnarumma amid his contract situation at San Siro, according to Eurosport.

Donnarumma is out of contract at season's end and while Milan have been discussing a new deal, the Italy star is yet to commit to the Serie A club.

The 22-year-old has already been linked with the likes of Manchester United, Juventus, Bayern Munich and Paris Saint-Germain.

ROUND-UP

- Diario AS reports PSG are fighting Real Madrid to sign Bayern star David Alaba. The Austria international will leave Bayern on a free transfer at season's end and while he has been tipped to join Madrid, PSG remain keen on him, along with Liverpool, Manchester City and Chelsea.

- Inter have reached a "handshake agreement" with Liverpool midfielder Georginio Wijnaldum, claims Sport Mediaset. The Netherlands international, whose contract expires at the end of June, has been linked to Barcelona.

- Borussia Dortmund are increasingly resigned to losing star forward Erling Haaland at the end of the season as they turn to Sevilla's Youssef En-Nesyri, says Eurosport. Haaland is one of the most sought-after players in Europe, wanted by City, United, Madrid, Barca, PSG, Chelsea, Liverpool and others.

David Alaba has appeared set to swap Bayern Munich for Real Madrid.

Alaba is keen for a new challenge following a successful partnership with Bundesliga and Champions League holders Bayern.

But three of Europe's elite are still reportedly eyeing Alaba.

TOP STORY – TRIO NOT GIVING UP ON ALABA

Liverpool, Chelsea and Paris Saint-Germain are still trying to sign wantaway Bayern Munich star David Alaba, according to Fabrizio Romano's Benchwarmers column.

Alaba will leave Bundesliga champions Bayern on a free transfer at the end of the season and he has been tipped to join LaLiga holders Real Madrid.

However, Liverpool, Chelsea and PSG are still pursuing the Austria international.

ROUND-UP

- RAC1 suggests Arsenal manager Mikel Arteta is one of Barcelona presidential candidate Joan Laporta's targets if Ronald Koeman does not remain at Camp Nou beyond 2020-21.

- Madrid are interested in Manchester United target and Borussia Dortmund star Jadon Sancho, reports the Daily Star. Sancho was wanted by United at the start of the season but a big-money move did not materialise.

- Mundo Deportivo claims Atletico Madrid are tracking Lyon midfielder Bruno Guimaraes, who is valued at around €25million.

- Manchester United and Premier League rivals Leeds United are eyeing Torino defender Nicolas Nkoulou, according to Tuttosport. The 30-year-old is set to become a free agent at season's end.

- L'Equipe says Mauro Icardi is free to leave PSG if a suitable offer arrives amid links to Juventus. Icardi is contracted to the Ligue 1 champions until 2024, but PSG are focused on re-signing Kylian Mbappe and making Moise Kean's loan deal from Everton permanent. If Mbappe departs for Madrid, PSG will look to raise funds by selling Icardi as they dream of Tottenham's Harry Kane and Dortmund sensation Erling Haaland.

Germany head coach Joachim Low is considering a dramatic U-turn that would see Thomas Muller and Mats Hummels invited back to the national team.

With the delayed Euro 2020 finals coming up in June, Low wants Germany to be as strong as possible, and a 6-0 thrashing by Spain in November was a result that pointed to a need for a change in direction.

Low's own future has come in for scrutiny, and there have even been suggestions Bayern Munich's treble-winning boss Hansi Flick could replace him.

The 2014 World Cup-winning coach declared in March 2019 that it was time for Germany to move on from the old guard, stating that Muller, Hummels and Jerome Boateng – all world champions themselves – would no longer be part of his plans.

It was a decision that Muller at the time said left him "dumbfounded", and Bayern were also critical, with all three players belonging to the Bavarian giants at that time.

Hummels has since moved on to Borussia Dortmund where the 32-year-old defender remains one of German football's star performers. Only Arminia Bielefeld's towering striker Fabian Klos (146) has won more balls in the air this season than Hummels (118) and just two players have made more blocks than his 22, taking all competitions into account.

Bayern midfielder Muller is one of only two players from the Bundesliga to reach doubles figures for goals and assists in all competitions this term, posting 13 and 12 respectively, with Dortmund's Jadon Sancho the other.

"Special circumstances can justify an interruption in the upheaval," Low said in an interview with Kicker magazine.

On the specific matter of Hummels, Boateng and Muller, Low said: "That will be a difficult and important question, also for me

"The character of Thomas Muller and Mats Hummels is that they do not oppress others."

Hansi Flick hailed Leon Goretzka's "excellent" three-assist display against Cologne but admitted he was not entirely pleased with Bayern Munich's overall performance in Saturday's 5-1 win.

Bayern put an end to their two-game winless streak in the Bundesliga with a routine victory against their relegation-battling opponents at Allianz Arena to retain a two-point lead on RB Leipzig at the summit.

Goretzka set up goals for Eric Maxim Choupo-Moting, Robert Lewandowski and Serge Gnabry, making it four assists in his last two outings after also teeing up Jamal Musiala's goal in the 4-1 Champions League win at Lazio in midweek. 

The Germany international was singled out for praise by Flick after the win against Cologne, but the Bayern boss acknowledged there is still room for improvement from his side after conceding for the fourth game in a row thanks to Ellyes Skhiri's strike.

"Leon did an excellent job in assisting the goals. That's why he was Man of the Match for me today," Flick said. "We will analyse the game and show it to the team. There were one or two things I didn't like. 

"But we'll go from game to game. That approach worked well last year. What comes out in the end is up to us. If we put in the performances and pick up wins, we can finish top of the league."

Gnabry marked his return from a thigh injury lay-off by scoring twice from his 14 touches of the ball as a second-half substitute, adding to Lewandowski's brace and Choupo-Moting's opener.

Thomas Muller also appeared for the first time since being struck down by coronavirus at the Club World Cup earlier this month and Flick is delighted to have both players fit and available.

"Serge and Thomas were very important to us as substitutes today," he said. "Thomas assisted Lewy [Lewandowski] with his first touch of the game and brought some certainty to our game, which we needed at that point. 

"Serge has scored two goals. Both will be valuable for us in the next games and I'm happy they're back. It's important to be satisfied with the 5-1 scoreline. We deserved the victory even by that margin."

Bayern let Cologne into the game early in the second half before pulling clear with three goals in the final 25 minutes in what was the 100th competitive meeting between the sides.

With his double on Saturday, Gnabry has now scored nine Bundesliga goals against Cologne - more than against any other side in his career - but the attacker agreed with Flick's assessment that Bayern are not quite at 100 per cent.

"When Thomas and I came on, it was a bit tricky for us," he said. "We hadn't been very sharp or dominant. We tried to lift the tempo and immediately made it 3-1. Then it became easier. 

"In the future, we have to make sure we don't have these shaky phases in the game and we come out of the blocks quicker. Of course, opponents will always have a chance, but we have to reduce these spells, then we'll be stronger again."

Thomas Muller returned to training at Bayern Munich on Thursday after the COVID-19 positive test that caused him to miss the Club World Cup final.

The all-action attacking midfielder was dealt his coronavirus blow just hours before Bayern beat Tigres UANL 1-0 to be crowned club world champions in Qatar on February 11, forcing him to self-isolate.

After two weeks away from the squad, and now clear of the virus, Muller was back at the club's training headquarters to be put through his paces.

Bayern announced on their website: "Muller was able to train at Sabener Strasse again on Thursday for the first time after a period self-isolating at home due to testing positive for COVID-19.

"Following final medical tests in the morning, the 31-year-old completed an individual session on the pitch alongside team training under the guidance of fitness boss Prof Dr Holger Broich."

Muller is enjoying a stellar season and is one of just six players from Europe's 'top five' leagues to have reached double figures both in goals and assists across all competitions.

He has 13 goals and 11 assists so far, and has created 81 chances in all.

Borussia Dortmund's Jadon Sancho is the only other player from the Bundesliga to achieve the double to date, after 10 goals and 12 assists.

Lagging some way behind Muller in the Bayern ranks is Serge Gnabry, who has managed only six goals and two assists in 28 appearances, figures that are also significantly down on what team-mates Leroy Sane (G: 8, A: 8) and Kingsley Coman (G: 6, A: 11) have achieved.

Gnabry has had more playing time than his attacking midfield colleagues Sane and Coman, and he began the campaign with a hat-trick against Schalke in Bayern's opener.

The former Arsenal youngster was substituted off in the Club World Cup final because of a torn muscle in his left thigh.

Bayern said on Thursday that Gnabry had undergone intensive rehabilitation in recent days and was able to resume training with Hansi Flick's squad.

That may see him come into contention, perhaps along with Muller, for Saturday's Bundesliga home clash with Cologne.

Bayern Munich rising star Jamal Musiala has chosen to play for Germany instead of England at international level.

The 17-year-old could make his senior debut as early as next month, with Germany head coach Joachim Low expected to name a large squad for their three World Cup qualifiers against Iceland, Romania and North Macedonia.

Musiala was born in Germany but moved to England when he was seven when his mother began a degree at Southampton University. He spent eight years in Chelsea's academy and played at youth level for England and Germany before returning to Bayern in 2019.

The 17-year-old has since broken into Hansi Flick's first-team plans and has already made 25 appearances in all competitions this season, mostly as a substitute. He scored in Bayern's 4-1 Champions League last-16 first-leg win over Lazio on Tuesday to become the youngest English player to score in the competition and the second-youngest of any nationality to get a goal in the knockout phase.

Speaking to The Athletic about his deliberations over his international future, Musiala said: "I've thought about this question a lot. What is best for my future? Where do I have more chances to play?

"In the end, I just listened to the feeling that over a long period of time kept telling me that it was the right decision to play for Germany, the land I was born in. Still, it wasn't an easy decision for me.

"England is home for me. It is difficult to find words for what England means for me because I have so many memories connected to very positive emotions.

"They [Chelsea and England's Football Association] are family for me, and I am sure that I remain a member of the family, even though I'm no longer there. I wouldn't be where I am right now without the trust and support of Chelsea and the FA, throughout the hard times and fun times. It wasn't always easy, but they made me the player I am now."

Low, who met with Musiala in recent weeks along with national team director Oliver Bierhoff, said of the news: "Obviously, we cannot give him any guarantees at the moment. That wouldn't be right.

"I think we will call him up in March because we will have a bigger squad than usual due to having three games in quick succession. We will be able to get to know one another better during this time.

"I'm pleased that Jamal has decided to play for Germany in the future. I see a lot of potential in him."

Borussia Dortmund star Erling Haaland should join Bayern Munich or leave the Bundesliga to further his career, Lothar Matthaus says.

The Norway striker scored twice in the 4-0 win over Schalke last weekend to take his tally to 27 in all competitions this season, behind only Robert Lewandowski (31) among Bundesliga players.

Haaland also hit two in the 3-2 win at Sevilla in the Champions League last-16 first leg to become the first player in the competition's history to score as many as 17 goals in his first 13 appearances.

The 20-year-old only joined Dortmund last January but is already being linked with a post-season move to one of Europe's major clubs.

Real Madrid, Barcelona, Manchester United, Manchester City and Chelsea have all been credited with an interest in Haaland, who is speculated to have a release clause of €75million that becomes active in 2022.

Bayern great Matthaus thinks Haaland ultimately has two choices at this stage of his career: pursue a move away from the Bundesliga, or sign for the champions.

"At a young age, he's a striker unlike any I've seen before: this goal tally, this power, passion, energy, as well as quality," he told Sport1.

"He could follow in the footsteps of other great footballers of the last 13 or 14 years.

"He won't be at Borussia Dortmund for life. He'll look for bigger clubs; he'll get a bigger wage. If he stays in the Bundesliga, there's only one step for him: Bayern."

Bayern have endured a dip in form of late, drawing with Arminia Bielefeld before a 2-1 loss at Eintracht Frankfurt.

Those results have allowed RB Leipzig to close to within two points of the leaders, and Matthaus thinks the challengers have an advantage in the title race due to squad depth.

Claiming a ninth title in a row for Bayern is "not a cast-iron guarantee", Matthaus wrote in his column for Sky.

He added: "It's already the case that [Bayern coach] Hansi Flick turns to the substitutes bench at critical moments and thinks, 'Who exactly can really help me now?'.

"If the situation worsens in terms of personnel, the season could end far less successfully."

RB Leipzig head coach Julian Nagelsmann insisted his side must "stay on the gas pedal" despite closing within two points of Bundesliga leaders Bayern Munich.

Leipzig defeated Hertha Berlin 2-0 on the road on Sunday, capitalising on leaders Bayern's 2-1 loss to Eintracht Frankfurt on Saturday.

Bayern also dropped points last week following their return from the Club World Cup in Qatar, drawing 3-3 with Arminia Bielefeld, meaning the margin at the top has been cut from seven to two points within a week, offering renewed title hope for Naglesmann's side.

However, the 33-year-old German maintained the hard work has only just begun for Leipzig, who have finished the past two Bundesliga seasons in third position.

"It's nice to get closer [to Bayern]," Nagelsmann said. "It used to be a seven-point-gap at one point. My team's reaction impressed me a lot… We have to remain focused and try winning our games.

"I think I said at the beginning of the season that February and March will become harder for the teams, as the impact of the Corona pandemic needs to be overcome in the right way.

"There are a lot of games and we need to stay on the gas pedal, and we did that in today's 90 minutes, as we did in the previous Bundesliga games.

"A lot of good teams are coming up now, with [Borussia Monchengladbach] Gladbach on the weekend, which will be a challenge. But we want to keep being successful in the Bundesliga and winning the games should speak for us."