Robert Lewandowski made history with his maiden hat-trick for Barcelona against Viktoria Plzen, becoming the first player to hit Champions League trebles for three different sides.

The Poland international found the target twice in the first half at Camp Nou on Wednesday, with Franck Kessie and Plzen's Jan Sykora also netting in a frantic opening 45 minutes.

Lewandowski capped a scintillating performance with his third after 67 minutes, firing a 20-yard finish past Jindrich Stanek after a neat interchange with Ferran Torres, who then struck to seal a 5-1 victory for Barca.

The latter strike for Lewandowski made him the first player to ever score Champions League hat-tricks for three different teams, having previously hit trebles for Bayern Munich (four) and Borussia Dortmund (one).

Lewandowski was level on Champions League goals with Karim Benzema (86) heading into the game but moved to third in the all-time scoring charts – only Lionel Messi (125) and Cristiano Ronaldo (140) have more.

The Barca forward has been in fine LaLiga form as well, scoring five times in four league appearances, and will look to continue his scoring run when the Blaugrana visit Cadiz on Saturday.

Piotr Zielinski struck twice and assisted another as Liverpool's poor start to the season continued with a humbling 4-1 defeat at Napoli in their Champions League opener.

Jurgen Klopp's side have underwhelmed in their first six Premier League games, winning just twice, and were behind after only five minutes in Naples following Zielinski's penalty.

Alisson denied Victor Osimhen's spot-kick just 13 minutes later, but Napoli were 3-0 up at half-time after strikes from Andre-Frank Zambo Anguissa and Giovanni Simeone, the latter on his Champions League debut.

Zielinski finished past Alisson again after the interval before Luiz Diaz responded with a bending effort – a mere consolation goal for Liverpool in the Group A encounter.

Osimhen rounded Alisson before striking the post with just a minute played, but Napoli were soon ahead after James Milner handled Zielinski's effort inside the area.

Zielinski found the bottom-left corner from the resulting penalty and another spot-kick arrived soon after when VAR sent referee Carlos del Cerro Grande to check a Virgil van Dijk foul on Osimhen, who was then denied by Alisson diving to his right.

Van Dijk cleared off the line with the goal gaping for Khvicha Kvaratskhelia but Napoli doubled their lead when Zielinski teed up Anguissa, who fired under the onrushing Alisson.

Alex Meret tipped away a goal-bound Van Dijk header before Simeone, on for the injured Osimhen, turned Kvaratskhelia's driven cross into an empty net on the stroke of half-time.

Zielinski doubled his account just two minutes after the break, dinking over Alisson on the rebound following Simeone's pass, before Diaz curled into the bottom-right corner after Andy Robertson's offload.

Meret pushed a powerful Diaz header over from Trent Alexander-Arnold's cross but Liverpool were unable to recover after a toothless first-half showing.

What does it mean? Liverpool's group-stage run ends as Napoli struggles continue

Liverpool cruised to six wins from as many group-stage games in last year's competition but their attempts to become the first English side to win seven straight such matches ended abruptly.

The Reds have conceded the first goal in five games in all competitions this season, the joint-most of any Premier League side, and were never going to recover after finding themselves three down at half-time in the Champions League for just a fourth time.

Liverpool's third Champions League defeat at Napoli in the last five seasons leaves Group A wide open after the first matchday, in which Ajax smashed Rangers 4-0 in Wednesday's other game.

Kvaratskhelia leaves Trent spinning

Klopp heaped praise on Luciano Spalletti's "interesting project" before the clash and pinpointed Zielinski as the main threat – and the midfielder responded with two goals and an assist.

But Kvaratskhelia should also take the plaudits after regularly tormenting Alexander-Arnold, creating a team-high three chances – one of those the assist for Simeone's goal – before his 57th-minute removal.

Van Dijk dives in

Van Dijk epitomises Klopp's revolution at Liverpool, with his calmness and authority in defence characterising the dominant Reds, but his performances have left much to be desired in recent weeks.

The centre-back fouled Osimhen for the second spot-kick, the second penalty he has conceded in his last seven appearances for the Reds. He had previously not given one away in 150 games in all competitions.

What's next?

Liverpool will aim to recover when they return to Premier League action at home to Wolves on Saturday, while Napoli host Spezia in Serie A on the same day.

Richarlison scored his first two Tottenham goals as they marked their return to the Champions League for the first time since the 2019-20 season with a 2-0 win over 10-man Marseille on Wednesday.

Spurs started slowly in their first competitive clash against the Ligue 1 side, but their cause was helped significantly just after half-time when Chancel Mbemba was shown a straight red card for a professional foul. 

Antonio Conte's men took full advantage of that numerical advantage inside the closing 15 minutes as Richarlison twice headed past Pau Lopez to the delight of the Tottenham Hotspur Stadium crowd. 

The result means Spurs are level on three points with Sporting CP at the Group D summit after the Portuguese side beat Eintracht Frankfurt 3-0 earlier in the day.

Spurs did most of the pressing in the first half, yet their only chance of note fell to Harry Kane five minutes before the interval, the England captain dragging wide after being played in by Son Heung-min.

Marseille's hopes of going back to France with a positive result were dealt a blow two minutes into the second half when Mbemba received his marching orders for bringing down a clean-through Son just outside the penalty area. 

Substitute Dejan Kulusevski injected some much-needed spark into Spurs' attack following his introduction on the hour mark, and the new-look hosts went ahead in the 76th minute when Richarlison headed home Ivan Perisic's cross. 

The former Everton man put the result beyond doubt five minutes later with another header – this time from Pierre-Emile Hojbjerg's cross – that left Lopez with no chance. 

Thomas Tuchel has been dismissed by Chelsea following Tuesday's Champions League loss to Dinamo Zagreb, ending a near-20-month stay at Stamford Bridge.

The German arrived midway through the 2021-22 season as Frank Lampard's successor, and steered the Blues to an improbable Champions League triumph just weeks later.

But despite success for the former Paris Saint-Germain boss in Europe, domestic glory has been harder to come by.

This week's defeat to Zagreb was the final straw for new owner Todd Boehly, after a slow start to the new Premier League season that has seen Chelsea win just three of their first six games.

In the wake of his departure, Stats Perform takes a look at the highs and lows of the Tuchel era at Stamford Bridge...

HIGH: European glory from the ashes

Having stepped in to replace Lampard with Chelsea ninth in the Premier League and slipping away from European qualification, Tuchel did more than steer them back on track – he pulled off a shock silverware smash-and-grab.

Not only did he drag them to an eventual fourth-place finish, he oversaw two-legged wins over Porto and Real Madrid to reach the Champions League final – and there, shocked favourites Manchester City to claim the Blues' second title in Europe's biggest club competition.

LOW: Ignominy on the continent

For that high-water mark, however, Chelsea have also had issues at continental level, perhaps best exemplified by two disparate results – this week's loss to Zagreb and last season's Champions League quarter-final exit to Madrid.

Defeat to the Croatian side came with a toothless attack that failed to gel for the German, but the crash against Madrid – when they allowed Karim Benzema to find an extra-time winner – showcased their struggle to close out games.

HIGH: Final delights...

In the time Tuchel has been in charge at Stamford Bridge, he reached all three domestic cup finals available to him, with FA Cup showpiece appearances in 2021 and 2022, and an EFL Cup trip to Wembley, too.

That saw him stand alone in the history of the club and cemented his reputation as something of a cup specialist.

LOW: ...and failures

But on each occasion, he failed to guide the Blues over the line, losing last season to underdogs Leicester City before suffering a pair of defeats against a quadruple-chasing Liverpool side this year.

While he has enjoyed greater success abroad, the struggles at Wembley have haunted his reputation – and may well have played a part in his ultimate dismissal.

HIGH: Champions of the world

Chelsea's Champions League triumph qualified them for a shot at two more major prizes last season – and credit is due for Tuchel guiding them to both, allowing them to stake a claim as the greatest club team in world football.

A nervy Super Cup win over Villarreal was aided by Kepa Arrizabalaga's penalty shootout heroics, while Kai Havertz' extra-time penalty helped the Blues sink Palmeiras to be crowned Club World Cup winners.

LOW: Lukaku lethargy

If there is to be a player that marks Tuchel's legacy at Chelsea outside of his Champions League triumph though, it will almost certainly be Romelu Lukaku – one of the worst transfer flops in recent memory.

Returning to Chelsea after a Serie A title win with Inter, hopes were high for the Belgian's homecoming, but his poor form and difficulties within the German's system saw him frozen out over the latter half of the season.

Lukaku returned to Inter on a year-long loan over the off-season, with just eight Premier League goals in 26 games, and it remains to be seen whether he ever steps foot back in Stamford Bridge again or, if like Tuchel, his time at the club is now over.

RB Leipzig have sacked head coach Domenico Tedesco after just under nine months in charge, following a miserable start to the new season.

The former Spartak Moscow boss has paid the price for a poor campaign to date, having taken just one win from five in the Bundesliga.

A heavy 4-1 defeat to Shakhtar Donetsk in their Champions League opener on Tuesday has now seen the German outfit dismiss his services

It marks the second permanent change in the top job in the space of a year for Leipzig, who sacked now-Leeds United boss Jesse Marsch less than half-a-year into his tenure last December.

"RB Leipzig have parted company with Domenico Tedesco with immediate effect," read an official club statement posted to social media.

"Assistant coaches Andreas Hinkel and Max Urwantschky have also left the club. RB Leipzig will announce his successor in due course."

Liverpool boss Jurgen Klopp has scoffed at a question about Napoli being "a dangerous city" despite the club warning traveling fans they could be targeted during their Champions League visit.

The Reds take on Napoli at Stadio Diego Armando Maradona on Wednesday in their first Champions League fixture since May's final loss to Real Madrid in Paris, where chaotic scenes unfolded outside the venue for their fans, including bottleneck queues and being sprayed with tear gas.

In the lead-up to Wednesday's game, The club issued a series of recommendations to traveling fans, warning they could be "targeted for theft, robbery or assault".

Twitter account Liverpool FC Help posted the recommendations including remaining in their hotel to drink and eat, not congregating in public areas, and avoiding the city centre, which the club's managing director Andy Hughes reiterated. He added that traveling fans should use official coaches to get to the stadium, rather than make their own way in the interest of personal safety.

But Klopp would not be drawn on that, when asked in Tuesday's press conference if he believed Naples was a "dangerous city".

"That's an embarrassing question from you," Klopp said. "You want to create headlines. I really don't understand.

"Are you from Napoli? Do you think it's a dangerous city? I don't live a normal life in Napoli. I am protected, I go to the hotel and now you ask me what I think about Napoli.

"You know exactly what people are talking about. If 'some' supporters meet 'some' supporters then 'something' can happen. Nothing to do with the city.

"But I'm not here to create headlines for you, and if you don't know what to ask anymore then that's no problem.

"I would love to go to the hotel to be honest and concentrate on the game tomorrow. It looks like you don't know what to ask anymore because of the question."

Hughes said the club understood the trip "may be a daunting prospect" for fans in light of the events in Paris.

He added: "Our supporters have faced a number of issues when traveling to Naples in the past.

"I do understand that some fans will want to make an occasion out of this trip. However, in this case I'd urge supporters not to wander into the city on their own, or to be wearing club colours during their stay in Naples."

Liverpool were grouped together with Napoli in both the 2018-19 and 2019-20 Champions League editions.

Milan came from behind to clinch a hard-fought 1-1 draw at Salzburg in their Champions League opener, as Alexis Saelemaekers cancelled out a superb solo goal from Noah Okafor.

Okafor's outstanding strike gave Salzburg the lead midway through an evenly matched first half, only for Saelemaekers to smash home an equaliser shortly before the break on Tuesday.

Stefano Pioli's men failed to build on the Belgium international's effort but almost grabbed a stoppage-time winner through Rafael Leao, who was denied by the frame of the goal.

Having failed to escape the group stages in the Champions League last season, however, the Serie A champions may still be relieved to escape without defeat ahead of meetings with Dinamo Zagreb and Chelsea.

Both sides created openings in an entertaining start, with Nicolas Capaldo heading over the crossbar before Olivier Giroud drilled a poor effort straight at Philipp Kohn from a tight angle.

But Salzburg hit the front through a tremendous goal after 28 minutes, as Okafor collected Fernando's pass before slipping the ball between Pierre Kalulu's legs and finishing neatly beyond Mike Maignan.

Milan drew level five minutes before the break, however, as Leao teed up Saelemaekers to slam a left-footed effort past Kohn from 10 yards out.

Salzburg missed a golden opportunity to regain their lead eight minutes after half-time, with Fernando somehow lifting his effort over the bar from six yards out when meeting Maurits Kjaergaard's cross.

Nicolas Seiwald then tested Maignan from range before the hosts appeared to run out of steam, allowing Sando Tonali to dictate the play for the Rossoneri.

Leao went agonisingly close to snatching the win in the 93rd minute, but saw his long-range effort deflect against the post and away to safety.

What does it mean? Group E looks wide open

With Chelsea succumbing to a dismal 1-0 defeat in Zagreb earlier on Tuesday, either side could have taken control of Group E with a victory.

But Milan were unable to push for a winner after levelling shortly before half-time, leaving the Rossoneri with just one win in their last 10 Champions League games (D3 L6), beating Atletico Madrid last November.

Meanwhile, no team will enjoy a trip to Austria; Salzburg are now unbeaten in their last five home games in UEFA's flagship club competition (W3 D2). 

Salzburg rely on youth once again

Salzburg have acted as a springboard for several top-class talents in recent seasons, and if Okafor's excellent solo goal is anything to go by, the 22-year-old Swiss forward could be another. 

Excluding own goals, each of their last 15 Champions League goals have been scored by players aged 23 or younger, the longest such run by any side in the competition's history.

Leao lays on a leveller

Having fired Milan to victory in the Derby della Madonnina on Saturday, Leao continued his electric form by teeing up Saelemaekers to get the Rossoneri back on level terms.

Leao has now delivered 11 assists in all competitions since the start of 2022, the most of any Serie A player.

What's next?

Milan travel to Sampdoria for their next Serie A outing on Saturday. Salzburg go to SV Ried in the Austrian Bundesliga on the same day, before facing Chelsea next Wednesday.

Joao Felix has started to discover his "best moments" since joining Atletico Madrid ahead of their Champions League clash with Porto, according to Diego Simeone.

The Portugal international became the fifth most expensive signing in history when he joined Atleti from Benfica for €126million in July 2019.

Only Neymar, Kylian Mbappe, Philippe Coutinho and Ousmane Dembele have moved for larger fees in world football than Joao Felix, who signed a seven-year deal but has struggled to deliver thus far.

The 22-year-old offered encouraging signs at the start of the 2022-23 season, though, assisting all three goals in the 3-0 opening-day LaLiga win over Getafe.

While Joao Felix is yet to find the net this season, Simeone believes the forward is finding his feet in the Spanish capital as Atleti prepare to host Porto in the Champions League on Wednesday.

"Joao is at the best moments in the years since we have been together, more mature, stronger, more sure of himself, involved in what the team needs," Simeone said.

"He has all the talent, the ability… he just has to tap into it."

Joao Felix will likely line up alongside Alvaro Morata against Porto, but Atleti could be without Jan Oblak, who was forced off with injury in the closing stages against Real Sociedad on Saturday.

"It will be assessed tomorrow morning. From there we will see what can happen," Simeone said of Oblak's fitness. "Ivo Grbic is ready, we believe in him, he is ready to play."

Atletico were narrow 1-0 aggregate losers to Manchester City in the quarter-finals of last year's competition, and Simeone is relishing the challenge of going further this campaign.

"The Champions League is not just another game, it is different," he added. "We will have to do things well from the first game, with our people, in our stadium, to grow in the competition. 

"It's clear that the Champions League is always very difficult, but it's an opportunity. Last season we had a good Champions League, we were close to being among the best, but we competed very well. 

"It's just beginning, we have to demonstrate what we imagine and what we're excited about, hopefully with the team's work we'll have a good Champions League."

Jurgen Klopp kept his message to his Liverpool players simple ahead of their Champions League opener at Napoli, urging the Reds to "play better" after previous struggles in Naples.

Wednesday will mark the third time Napoli and Liverpool have met in the Champions League group stage in the past five seasons, with the Italian side winning home games against the Reds in both 2018-19 (1-0) and 2019-20 (2-0).

Klopp also lost 2-1 at Napoli while Borussia Dortmund coach, and he knows his players must improve on these previous showings.

"I'm a late bloomer," he said. "I always need a little bit longer to achieve my stuff, and that means sometimes I have to try two times, sometimes three times, sometimes four times – and Napoli [could be] four times, obviously.

"What do we have to do? Play better than in the previous three games – that would be very helpful, because we didn't play particularly well when we came here. One reason is because Napoli are pretty strong."

Despite Liverpool's poor record at Napoli, the Reds have won each of their last three away games against Italian sides in European competition, although the Partenopei have five victories in six Champions League home games against Premier League opposition.

Luciano Spalletti will be in the opposite dugout to Klopp this time around, and the German heaped praise on the Napoli coach and his squad.

"He is a real great of the game, worked all over the world, very successful, you can always see his stamp on the team," Klopp added.

"It's always clear who is the coach, I respect that a lot. Looking forward to seeing him tomorrow.

"[The Napoli players] are not all young, but they're all good... I'm not 100 per cent sure, but I think not too long ago there was a bit of a nervous situation in Napoli around when players left for different reasons; obviously it has all settled again.

"I'm really happy for the people here. But one player who always stayed is [Piotr] Zielinski, and around him you could build again another team – it's a really, really interesting project, I have to say.

"Good football, intense style, different approaches, so really good. Spalletti is a good coach, so nobody should be surprised, and he's obviously pretty relaxed about maybe some nervous things around. So, it's probably a really good fit – that's how it looks."

Arthur Melo, on loan at Liverpool from Juventus, will be familiar with Napoli after his exploits in Serie A and could make his debut against Spalletti's side, but Klopp warns the midfielder will need time to settle.

"Arthur needs now just football – and training, especially – that's how it is. He wasn't in team training for a while at Juve, so he needs proper team training – and that's what we are doing with him," Klopp explained.

"Can he play minutes? Yes. Should he play full game? No, because he needs to get used to the intensity in each competition. It's not like in the Champions League you have to work less than in the Premier League.

"Not at all, especially not here. He is doing well, he is really giving his absolute all in training. We have to be careful with him as well, and then we will see whether we can use him."

Sadio Mane will provide vital Champions League experience with his "special gift for leading the team" despite his quiet demeanour, according to Julian Nagelsmann.

Mane will play his first game in UEFA's flagship club competition for the Bundesliga champions on Wednesday at Inter, where Bayern have a perfect record in Europe (three wins in three games).

The Senegal international will attempt to fill the void left by Robert Lewandowski, who left for Barcelona, and brings crucial experience, having lifted the Champions League with Liverpool in 2019.

Mane has started life in Germany in fine form, scoring three times in five games, and needs one more goal to become just the fourth African player to score 25 or more goals in the Champions League.

While Bayern have shared the goalscoring burden after the forward's arrival from Liverpool, Nagelsmann says Mane will bring more to his side than just goals.

"I expect that he will pass on his experience to other players and live up to his claim to leadership," Nagelsmann told reporters. 

"He has a special gift for leading a team – not even as a loud speaker."

Bayern are among the pre-tournament favourites despite crashing out at the quarter-final stage last term, losing 2-1 on aggregate to Villarreal after Samuel Chukwueze's late goal at the Allianz Arena.

While the Bundesliga side have not lifted European football's main prize since 2013, Nagelsmann welcomes the favourites tag as he looks to atone for last season's disappointment.

"Bayern Munich should always be one of the favourites, given their history," he added. "The Champions League is always special, even hearing the anthem. I've never been to the San Siro as a coach.

"There have been many historic games here. I don't know yet whether it will be the same tomorrow. The opening game isn't decisive but we're trying to get off to a good start."

Inter have been somewhat off the pace in Serie A, winning three games and losing twice to sit eighth in the embryonic table following a 3-2 derby disappointment against fierce rivals Milan last time out.

Bayern are also unbeaten in 10 games against Italian opposition in the Champions League and have won all 18 of their group-stage openers since the 2003-04 term.

But Manuel Neuer warned Bayern cannot afford to be complacent, nor underestimate Simone Inzaghi's side amid an underwhelming start to the 2022-23 season.

"It's the start of the Champions league, you can't say that," Neuer responded when asked if Inter were a weakened side from last campaign. 

"It's a completely different atmosphere and a chance for Inter to restart. We won't underestimate the opponent.

"We're among the favourites. In the past few years we haven't managed to make it to the end. Bitter defeats like the last one against Villarreal hurt. We have the ambition and the incentive to get very far."

Antonio Conte has criticised Tottenham's fixture crunch in the run-up to the World Cup, stating it is the first time in his career he has seen such a "crazy" schedule.

The Premier League side get their Champions League campaign under was on Wednesday when they host Marseille, marking their return to the competition after two seasons away.

Coupled with English domestic commitments, they will play 17 games over the next nine and a half weeks, due to the mid-season staging of this year's World Cup in Qatar.

Reflecting on the calendar, Conte has been left stunned by the crush of clashes on his team's schedule, and says he believes organisers can do better to avoid such issues.

"It's crazy," he stated at a pre-match press conference. "We played three games in six days against Nottingham Forest, West Ham and Fulham, and now we play three games against Marseille, [Manchester] City away [and] Sporting Lisbon away in six days.

"I think [this is the] first time in my career [I have] seen a schedule like this. I think we can do much better for the future."

Conte added that Spurs' return to the top competition in European club football was a chance to show further progress on a strong 2021-22 season.

"First of all, we are having a Champions League press conference for what we did last season," he stated. "I think last season we did a fantastic job with the club and with the players.

"We are to enjoy this important competition in Europe. For sure, we want to play to try to do our best.

"We have to play with ambition and with great desire, with great will. I know very well this tournament is really difficult, it is the most difficult in the world.

"But at the same time, it's a great opportunity to show we are going in the right way, that we are making a step forward and we want to try to improve and to give satisfaction to our fans and then to give satisfaction to ourselves."

Pierre-Emerick Aubameyang is in the squad for Chelsea's Champions League opener against Dinamo Zagreb on Tuesday.

The Gabon international was one of the final major signings of a busy transfer window for Thomas Tuchel's Blues, as they seek to offset the loss of Romelu Lukaku.

The former Barcelona forward arrived at Stamford Bridge with a broken jaw however, throwing into doubt when he would be able to participate.

But with confirmation of Chelsea's 23-man party for their European opener in Croatia comes the news he could be in line for his debut, alongside fellow new recruit Denis Zakaria.

N'Golo Kante and Thiago Silva are the two men who drop out for the Blues, as the Premier League side look to take the momentum from their victory over West Ham at the weekend into an opening continental win.

Barcelona head coach Xavi is "pretty sure" defender Jules Kounde will make his LaLiga debut for his new team against Real Valladolid this weekend.

Kounde joined Barca from Sevilla for a reported fee of €55million this transfer window, after the Catalan club beat Chelsea to the France international's signature.

However, Barcelona's financial situation meant Kounde could not be registered to play in LaLiga, although other new arrivals Robert Lewandowski, Raphinha, Franck Kessie and Andreas Christensen have each made their debuts.

But Xavi believes the situation is finally sorted and is confident Kounde will feature against Valladolid at Camp Nou on Sunday.

Xavi told reporters at his pre-match news conference: "It's a negotiation with LaLiga. We are pretty sure that Jules can play tomorrow. We are optimistic."

Kounde is sure to be a big help for Barcelona in Europe as they compete to lift their first Champions League trophy since beating Juventus in the final in the 2014-15 campaign.

Xavi's team will first have to get out of a tricky Group C that includes Inter and Viktoria Plzen, as well as Bayern Munich, who infamously thumped Barcelona in a humiliating 8-2 defeat in the 2019-20 quarter-finals.

And Xavi knows the size of the task ahead of his team, saying: "It's a very difficult group, perhaps the toughest. 

"We've made very good signings this season, we've invested a lot. The Champions League and the league, we want to go through and fight for the trophies. But the challenge is massive. It's perhaps the group of death."

Robert Lewandowski will be reunited with Bayern Munich in the Champions League on September 13, with Erling Haaland facing former side Borussia Dortmund the following day.

Following his move to Barcelona in July, Lewandowski is set for a swift reunion with Bayern after the European heavyweights were drawn together in Group C.

The same can be said for Haaland, who departed Dortmund for Group G opponents Manchester City.

Lewandowski will return to the Allianz Arena on matchday two; 24 hours before Haaland and City welcome Dortmund to the Etihad Stadium, with the return fixture at Signal Iduna Park taking place on October 25.

Reigning champions Real Madrid launch their title defence away at Celtic on September 6, though the standout fixture of the opening day sees Paris Saint-Germain and Juventus lock horns at the Parc des Princes.

The following day sees last season's finalists Liverpool begin their quest to go one step better away at Napoli, whose Serie A rivals Inter meet Bayern at San Siro.

Paris Saint-Germain president Nasser Al-Khelaifi insists there are no issues between star players Kylian Mbappe and Neymar, comparing any frustrations between the pair to sibling squabbles.

Rumours of discontent at the Parc des Princes have been swirling since Paris Saint-Germain's 5-2 win against Montpellier on August 13, where Neymar decided to assume penalty duties following an earlier miss from the spot by Mbappe.

During that game, Mbappe reportedly appeared frustrated with multiple teammates, which was said to have boiled over in the dressing rooms afterwards, requiring Sergio Ramos to step in and keep the peace.

Soon after, Neymar was seen to have liked a tweet that said Mbappe's new contract with the French giants had him acting like the "owner of PSG".

After the Champions League draw on Thursday – where Paris Saint-Germain landed in Group H with Juventus, Benfica and Maccabi Haifa – Al-Khelaifi was adamant that any supposed rift between his superstars was being overblown.

"No, no. There's no problem at all," he said. "I think it's really... I mean, I think it's you making a problem especially, and the media. 

"There's no problem at all. I mean, I can argue with my brother, or sister, it's normal. But the media, because it's Kylian Mbappé... they are good friends and they are very good team-mates. And they will always be good team-mates."

Through three games of the Ligue 1 season, Paris Saint-Germain are the only team with three wins, and have done so with 17 goals for, and only three against.

"It's a good start, it's just the start," Al-Khelaifi said. "They need to work harder and there's a lot of things to work on and to improve, because the season is too long, it's just the start. We are very happy with the start."