Arsenal

Arsenal manager Unai Emery speaking to Sky Sports: "We are expecting to play a good match. We expect a lot out of the cup competition. We have won it two times and played in finals. Every player wants to play to win."

On starting Mesut Ozil: "He can help us. Tonight is important for him. He knows his teammates and who we are playing. He is going to play in his best position also. We want to share different qualities in this shape and to use everyone. His skill and his quality. He can be good physically."

On choosing Hector Bellerin over Ozil as captain: "After my decision about the captain, tonight it is because we had that decision to make Hector Bellerin the captain."

Stephen Warnock
Ex-Liverpool defender on Radio 5 Live

I don't think Mesut Ozil would be playing if it wasn't the League Cup. I think Emery just wants to change the team. It's interesting though to see that fans want him back in the team now things aren't going very well.

I think one of the things you've got to do with Ozil is put your arm around him and make him feel special.

Chelsea

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Chelsea have won 10 of their last 11 League Cup matches at Stamford Bridge, with the only exception being a 0-0 draw with Arsenal in January 2018.

Changes so far:

Liverpool - 11

Arsenal - 11

Villa - Nine

Wolves - 11

Jonathan Greening
Former Manchester United midfielder on 5 live

There's always going to be a lot of changes in the Carabao Cup. It doesn't mean these teams don't want to get through to the quarter-finals though and a couple of games away from Wembley.

Aston Villa manager Dean Smith makes nine changes to the team that lost to Manchester City in the Premier League on Saturday.

Ahmed Elmohamady will captain the side with only Douglas Luiz and Trezeguet starting from the weekend. James Chester who has been injured since pre-season gets a spot on the bench.

Aston Villa XI: Steer, Elmohamad, Konsa, Hause, Taylor, Hourihane, Luiz, Lansbury, Trezeguet, El Ghazi, Davis

Subs: Nyland, Guilbert, Chester, Nakamba, McGinn, Kodjia, Wesley

Wolves head coach Nuno Espirito Santo makes 11 changes from the side that drew at Newcastle in the Premier League on Sunday. John Ruddy comes in to play in goal while Chem Campbell makes his debut to become the club's second youngest player ever.

Wolves XI: Ruddy, Vallejo, Bennett, Kilman, Sanderson, Jordao, Perry, Vinagre, Campbell, Cutrone, Neto

Subs: Patricio, Taylor, Ashley-Seal, Samuels, Rasmussen, Cristovao, Richards

We've already had a good night of cup drama this week - and here's who are already into the quarter finals:

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Leicester City

Colchester United

Everton

Manchester City

Oxford United

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This will be the 15th League Cup match between Liverpool and Arsenal, making it the most played fixture in the competition’s history.

Arsenal have won the two most recent League Cup meetings between these sides – 2-1 at the Emirates Stadium in 2009-10 and 6-3 at Anfield in 2006-07.

MOTDx's Chelcee Grimes takes left-back Andy Robertson on a tour of Liverpool, including her "Scouse house" to hear more about his competitive rivalry with team-mate Trent Alexander-Arnold and his expectations for Premier League glory this season.

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The standout tie of the Carabao Cup fourth round is Chelsea against Manchester United at Stamford Bridge, seven years after their last encounter in the competition.

Roberto di Matteo's Chelsea edged a 5-4 thriller after extra time on that occasion, in the season Swansea City went on to beat Bradford City 5-0 in the final.

A lot has changed for both clubs since 2012, but can you name the two starting XIs from that meeting?

You have five minutes...

I'm going to say option b).

Dazl: Did Klopp and Emery text each other before selecting their line ups? Or do they just care so little about this competition they were happy to get thrashed if the other manager went for it?

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Wolves are looking to reach the quarter-finals of the League Cup for the first time since 1995-96, when they were eliminated by current opponents Aston Villa at Villa Park (0-1).

Apologies - those kick-off times are all GMT, not BST. You knew that.

Arsenal

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Arsenal will offer counselling to captain Granit Xhaka after his angry confrontation with home fans during Sunday's 2-2 draw with Crystal Palace.

The Swiss midfielder was booed while he walked off the pitch, prompting him to cup his ear, walk past boss Unai Emery and storm down the tunnel.

Emery said: "He is upset, devastated and very sad.

"It is not only yesterday and today. He is feeling the supporters don't like him."

Xhaka is not in the squad this evening.

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The League Cup has become something of a testing ground for some of the Premier League's most promising young players.

Tonight, some will get an opportunity to shine in high-profile settings as four of the top-flight's 'big six' face each other in the fourth round.

BBC Sport speaks to fans from Arsenal, Chelsea, Liverpool and Manchester United about a teenage talent at their club who has the potential to make a name for himself.

Image source, PA Media

Read all the reactions here!

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At a game tonight? Hoping for a shock? Wanting to see some youngsters get a game?

Fire away with your thoughts:

Jurgen Klopp makes 11 changes to the Liverpool side who beat Tottenham 2-1 in the Premier League.

Regular first team players Alex Oxlade-Chamberlain, Adam Lallana and Naby Keita start in midfield, while James Milner is at left-back and Divock Origi up front.

17-year-old Dutch centre-back Sepp van den Berg partners Joe Gomez in defence and there are starts for Harvey Elliott, 16, and Rhian Brewster, 19, in attack. Full-back Neco Williams, 18, makes his debut.

Liverpool XI: Kelleher, Williams, Gomez, Van den Berg, Milner, Lallana, Oxlade-Chamberlain, Keita, Elliott, Origi, Brewster

Arsenal's team is also completely changed from their 2-2 league draw with Crystal Palace.

Mesut Ozil starts for just the third time this season in midfield, while Rob Holding partners Shkodran Mustafi in defence.

Youngsters Joe Willock, Bukayo Saka and Gabriel Martinelli all start. Summer signings Kieran Tierney and Nicolas Pepe are on the bench.

Arsenal XI: Martinez, Bellerin, Holding, Mustafi, Kolasinac, Torreira, Willock, Maitland-Niles, Ozil, Saka, Martinelli

No games on TV last night, two on this evening. Three matches with three different kick-off times.

Why? Who knows?!

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Liverpool v Arsenal (19:30 GMT)

Aston Villa v Wolves (19:45 GMT)

Chelsea v Manchester United (20:05 GMT)

Speaking of changes, both sides at Anfield have made the full 11 changes each.

Mesut Ozil starts for the Arsenal, Granit Xhaka is not in the squad.

Full team news to come...