Bristol City make just one change to the team that beat Nottingham Forest on Saturday, with former Manchester United goalkeeper Luke Steele replacing Frank Fielding in goal.Bristol City: Steele, Wright, Flint, Baker, Magnusson, Brownhill, Smith, Pack, Bryan, Paterson, Reid.

All change for Manchester United. Marcus Rashford the only survivor from the weekend win over West Brom.

In come Zlatan Ibrahimovic as captain, Paul Pogba after his ban, Sergio Romero, Matteo Darmian, Victor Lindelof, Marcos Rojo, Luke Shaw, Daley Blind, Scott McTominay and Anthony Martial.

David de Gea, Antonio Valencia, Chris Smalling, Phil Jones, Ashley Young, Ander Herrera, Nemanja Matic, Juan Mata, Jesse Lingard and Romelu Lukaku miss out.

Man Utd XI: Romero, Darmian, Lindelof, Rojo, Shaw, Blind, McTominay, Pogba, Martial, Rashford, Ibrahimovic.

Gary Mensah: Why are we playing Pogba against Bristol City?

Leon Burnett: I fancy Bristol City tonight!

Jim Shelley: Bristol City fans getting see Pogba and Ibra Not to mention Rashford, Martial, and, um, Darmian.

Lucy: Come on Bristol City! It would make 2017 if they could do the unthinkable.

Andy Gillies
BBC Radio 5 live at Aston Gate

Always lots of interest when Jose does his pre-match interview - he's made Zlatan captain tonight.

Image source, BBC Sport

Image source, Getty Images

Bristol City manager Lee Johnson hopes one of his players will become a "hero" tonight and go down in history.

In 1994, the Robins pulled off a shock 1-0 win over Liverpool in an FA Cup third-round replay at Anfield.

Johnson said: "I think we have a group that's very hungry to prove how good they are."

Tom Garry
BBC Sport at Ashton Gate

Image source, BBC Sport

Football nights like this don't come frequently in the West Country. Bristol City haven't experienced a game of this magnitude since the 2008 Championship play-offs.

Goalscoring centre-back Aden Flint may have calmly labelled this match as the Robins' "least important of the month", given their hopes for promotion.

But rarely in recent memory has any fixture in this region generated such a battle for spare tickets amid the pre-match buzz.

BBC Radio 5 live

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Cheltenham Town manager Gary Johnson, father of Bristol City boss Lee: "I am very proud as a dad. As a previous manager at Bristol City, you always look at the result, I still live in Bristol, I get on well with the board which is not always the case and Lee has turned it around from last year. They have already beaten three Premier League sides to get to this stage so it is a good learning curve if they, unbelievably, get to the top-flight next season.

"I am still a bit old school myself but Lee is into the new gadgets and will speak to anyone if he thinks it will help him. He is good at networking, has psychologists and psychiatrists which help him. He is getting a lot of information for himself and is definitely showing he can pass it all on to the players."

A former player of both clubs, ex-England man Andy Cole has told BBC Points West he feels Manchester United might have "too much" for Bristol City tonight.

Cole scored 20 league goals for the Robins between 1992 and 1993 before signing for Newcastle and then going on to enjoy rich success with United.

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• This will be the first ever meeting between these sides in the competition, and first of any kind since a top-flight clash in February 1980.
• Manchester United won that match 4-0, with Joe Jordan scoring a brace on top of a Sammy McIlroy strike and an own goal from Geoff Merrick.

Here's how the teams will line up tonight at Stamford Bridge.

Image source, .

Image source, .

Manchester United

Bristol City are taking this game as seriously as they should - they make just one change as Luke Steele starts in goal.

Manchester United make 10 changes. Zlatan Ibrahimovic is named captain, and Paul Pogba starts.

Bristol City: Steele; Wright, Flint, Baker, Magnusson, Brownhill, Pack, Smith, Bryan, Paterson, Reid

Man Utd: Romero; Darmian, Lindelof, Rojo, Shaw; Pogba, McTominay, Blind; Martial, Rashford, Ibrahimovic

Marcus Wheeler: Playing reserves against Bournemouth tonight. If we go out I’ll be fuming, if we win i’ll praise Conte for playing young players!

Zac Eden: Expecting nothing else than a win tonight. *Should* be easy considering Bournemouth have just got battered by Liverpool 0-4.

Mark Ashworth: Bournemouth and Manchester United double on for tonight.

Andrew Gillies
BBC Radio 5 live

As I walked into Ashton Gate there were already loads of fans around the players' entrance hoping to catch a glimpse of their heroes on what is being described as being the biggest night here for 30 years by some home fans.

The Bristol City players are already in - they’ve had a pre-match briefing from their coaches in the press conference room.

United, whose flight south was diverted to Cardiff this morning because of fog, will arrive shortly and walk in through the tunnel door out on to the pitch

Chelsea make eight changes from their 1-0 win over Southampton, but it's still a strong team. Antonio Rudiger, Davide Zappacosta, Cesc Fabregas and Michy Batshuayi are among the players to come in.

Willy 'oh yeah he's at Chelsea' Caballero replaces Thibaut Courtois in goal.

Bournemouth make seven changes from the 4-0 Liverpool thrashing - with 20-year-old left-back Jack Simpson making his second appearance - he scored on his first against Middlesbrough.

Artur Boruc, Harry Arter, Ryan Fraser and Dan Gosling all start. Jermain Defoe keeps his place.

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Mark Chapman presents 5 live sport tonight from 19:00 GMT live from Ashton Gate.

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We have full match commentary with Alistair Bruce-Ball, while John Southall keeps you up to speed on the Chelsea match.

Alternatively, tune in to Sports Extra for full comms from Stamford Bridge with Chris Wise and Mark Schwarzer.

Bristol City boss Lee Johnson is hoping a "£450 bottle of wine" will entice Jose Mourinho to sit down with him after tonight's game at Ashton Gate.

Asked if he hoped to spend time with the Portuguese, Johnson told BBC Sport: "I hope so. I spent £450 on a bottle of wine!

"I have had to raid my little girl's piggy bank. It is being flown in especially from Portugal."

You can read more on that corking tale here.

• Bournemouth have only won one of their last nine meetings with Chelsea in all competitions (L8), though that win did come at Stamford Bridge back in December 2015.
• This is only Bournemouth's second appearance in the quarter-final of this competition - they lost their previous such match 3-1 against Liverpool in 2014-15.

Bournemouth

Bournemouth keep one (both?) eyes on the league as they too make seven changes.

In comes Jack Simpson at left-back, who scored in his only previous appearance in this cup.

Bournemouth: Boruc; Smith, Francis, Cook, Simpson; Mousset, Arter, Surman, Gosling, Fraser; Defoe