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Inter Milan host Benfica this evening in the Group D clash. Lautaro Martinez salvaged a point for Inter Milan in their opening Champions League game, an 86th minute goal from Martinez against Real Sociedad avoided a loss. Benfica will be looking to bounce-back from a 2-0 loss at home to RB Salzburg, as they sit at the bottom of the group.

Since the defeat at Arsenal, PSV have picked up three consecutive wins and welcome Sevilla to the Philips Stadium. Sevilla have had a rocky start to the season and an own-goal from Sergio Ramos gifted Barcelona three points at the weekend - Sevilla still sit above PSV in Group B, but only by a point.

Alex Turk, Stretford Paddock

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We’re only nine games into the new season but Manchester United are already on the brink of regressing under Erik ten Hag - in one important aspect, anyway.

Ten Hag’s largely joyous maiden campaign was fuelled by United’s formidable Old Trafford record. A fortress once more.

We're only just into October and United have already lost the same number of home fixtures as last term.

United host Galatasaray knowing anything other than a win will intensify 'crisis' talk.

Defeat to the Tukish side would make it three Old Trafford losses in four. And with away fortunes showing no signs of improving under Ten Hag, losing that home spark would be nothing short of a potentially fatal disaster.

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Lens boss Franck Haise: "It will be a big challenge. Arsenal have great experience and quality, with a big past and present.

"We deserve to be in this competition even if we are outsiders and we must play these matches with a lot of character, like we did against Sevilla."

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This is Galatasaray's first season in the group stage of the Champions League since 2019-20 when former Manchester United forward Radamel Falcao was playing for them.

They finished bottom in a group featuring Real Madrid, Paris St-Germain and Club Bruges.

Galatasaray reached the semi-finals of the competition in 1988-89 when it was known as the European Cup.

This is their first game at Old Trafford for 11 years when a Michael Carrick goal was enough to earn Manchester United a narrow group stage win.

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There's a sneaky little Premier League game buried in among tonight's Champions League fixtures.

And it's a real bottom of the table scrap as Luton host Burnley at Kenilworth Road.

The players are out on the pitch and you can follow that one here.

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Simon Gleave, head of analysis, Nielsen Gracenote: "Arsenal's comfortable 4-0 win against Group B second favourites PSV improved their chance of reaching the Champions League last-16 to 94% according to our Euro Club Index, external.

"Tonight's opponents Lens are theoretically the weakest team in the group as they are ranked 47th amongst Europe's top flight clubs according to the Euro Club Index, 41 places below Arsenal."

Phil McNulty
BBC Sport chief football writer

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Marcus Rashford has not been at his best this season, but I would never describe him as a weak link. I think the whole team is short on confidence at the moment, so this has an impact on him.

Rashford is still a very talented player and Erik ten Hag will hope he forms a quick understanding with Rasmus Hojlund, who I think has shown real promise.

So, Rashford as United’s weak link? Not in my opinion.

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Striker Victor Osimhen comes back into the Napoli starting XI after playing just the second half in Saturday's 4-0 win at Lecce.

The Nigeria international replaces Giovanni Simeone and Matteo Politano comes in for Jesper Lindstrom on the wing.

Real Madrid make just one change from Saturday's 3-0 victory at Girona with Brazil winger Rodrygo starting in the place of Joselu.

England international Jude Bellingham is also in the starting line-up.

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Manchester United need the points after losing their opening Group A game 4-3 against Bayern Munich in Germany.

That's left Erik ten Hag's side playing catch-up.

Group A's other game tonight sees FC Copenhagen entertain Bayern. That's also a 20:00 BST kick-off.

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Arsenal returned to the Champions League in style after six years with an impressive win over PSV Eindhoven at Emirates Stadium in their first group match.

It was a scintillating first half display that saw them race into a 3-0 lead thanks to goals from Bukayo Saka, Leandro Trossard and Gabriel Jesus.

A fourth from Martin Odegaard capped things off in the second half meaning Arsenal sit top of the table going into tonight's match.

Manchester United

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Erik ten Hag is being interviewed on the pitch by TNT Sports.

He's asked about Antony's return to the squad and says Manchester United took the allegations against the player seriously.

He says the player has co-operated with police in both Brazil and Manchester.

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Arsenal boss Mikel Arteta on Lens: "We expect a huge battle. We are more than aware of it.

"They are a really good side and we have a huge test ahead of us. I was really impressed with what they did last year.

"It's incredible to finish in that position, and the way they did it, the form they had at home.

"This season they have been really unlucky with some results. I don't know how they don't have more points."

Lens boss Franck Haise makes three changes to the side who beat Strasbourg 1-0 last Friday.

Salis Abdul Samed, Przemysław Frankowski and Adrien Thomasson come into the starting line-up.

Andy Diouf, Ruben Aguilar and Angelo Fulgini drop to the bench.

Lens XI: Samba, Medina, Danso, Gradit, Machado, Abdul Samid, Mendy, Frankowski, Thomasson, Sotoca, Wahi.

Substitutes: Leca, Pandor, Aguilar, Fulgini, Diouf, Maouassa, Said, El Aynaoui, Khusanov, Guilavogui.

Arsenal boss Mikel Arteta makes two changes to the side which won 4-0 against Bournemouth last time out.

Leandro Trossard and Takehiro Tomiyasu come into the side in place of Ben White and Eddie Nketiah.

Bukayo Saka was an injury doubt once again but is in the starting line-up.

Thomas Partey is on the bench for the first time since August when he was ruled out with a groin injury.

Arsenal XI: Raya, Tomiyasu, Saliba, Gabriel, Zinchenko, Odegaard, Rice, Havertz, Saka, Trossard, Jesus.

Substitutes: Ramsdale, Hein, White, Partey, Smith Rowe, Nketiah, Kiwior, Cedric, Jorginho, Vieira, Nelson, Elneny.

BBC Radio 5 Live

As well as following the Champions League games via this live text, you can tune into BBC Radio 5 Live and listen to commentary of Manchester United v Galatasaray.

Head up to the top of this page to tune in.

Manchester United manager Erik ten Hag names winger Antony in his matchday squad for the first time since 3 September after allegations of domestic abuse were made against him.

The Brazilian, who denies those allegations, is on the bench.

There is just one change to the starting lineup following Saturday's 1-0 loss at home to Crystal Palace with Hannibal Mejbri coming in for Facundo Pellistri.

Manchester United XI: Onana, Dalot, Varane, Lindelof, Amrabat, Casemiro, Mount, Hannibal, Fernandes, Rashford, Hojlund.

Substitutes: Bayindir, Vitek, Maguire, Evans, Eriksen, Antony, McTominay, Pellistri, Garnacho, Martial.

Image source, BBC Sport

Galatasaray boss Okan Buruk also makes just one change following a 2-1 win against Ankaraguku last time out.

Abdulkerim Bardakci comes in to replace Kerem Demirbay in midfield.

Former Manchester United winger Wilfried Zaha starts.

Galatasaray XI: Muslera, Boey, Sanchez, Ayhan, Angelino, Torreira, Bardakci, Tete, Akturkoglu, Zaha, Icardi.

Substitutes: Gunay, Demirbay, Mertens, Nelsson, Oliveira, Yilmaz, Ndombele, Bakambu

Image source, BBC Sport

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Loads of other big games around in the Champions League tonight. We'll keep you posted on the latest.

FC Copenhagen v Bayern Munich

Inter Milan v Benfica

Napoli v Real Madrid

PSV Eindhoven v Sevilla

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The Conservatives are not the only visitors to Manchester this week.

Around 3,000 Galatasaray fans have travelled to the city from Turkey for this game.

And you can bet they will make themselves heard inside Old Trafford.

Back in 1993-94, United flew to Istanbul to face Galatasaray in the Champions League. Sir Alex Ferguson and his players were greeted at the airport by fans with signs saying 'welcome to hell'.

Read more on when Man Utd were 'welcomed to hell'.

Antony is on the Manchester United bench for tonight's game. The Brazilian winger has not played since early September after allegations of domestic abuse were made against him. Antony, who has denied the allegations, has not been arrested or charged in either Brazil or the UK.

Full team news from Old Trafford coming up.

Arsenal's flight to France was delayed from Luton airport last night, leaving almost five hours late.

They eventually got on their way just after 21:00 BST with bad weather in the UK causing the delay.

Mikel Arteta and William Saliba were due to speak at a press conference at the Stade Bollaert-Delelis but it was cancelled.

Arsenal trained at London Colney on Monday morning before heading to the airport so their plans were not too disrupted.

Simon Stone
BBC Sport at Old Trafford

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Manchester United manager Erik ten Hag doesn't pull any punches in his programme notes for tonight's game.

Defeat at Old Trafford to Crystal Palace was United's fifth reverse of the season so far, including their opening Champions League game at Bayern Munich, where the eventual 4-3 scoreline flattered Ten Hag's side.

"Our start to the season has not been good enough," said the Dutchman.

"Although there are reasons, we will not attempt to hide behind excuses.

"It is up to us to now to turn our fortunes around. What happens next is up to us and nobody else."