The first change is in goal, where Kepa Arrizabalaga comes in for Edouard Mendy, and it looks likely to be a back four in front of him. Antonio Rudiger retains his place in the side, with fellow centre-back Malang Sarr joining him. Kenedy makes his first appearance since returning from loan in January on the left flank, with Callum Hudson-Odoi returning on the right.

That would mean a completely fresh midfield three, as Ruben Loftus-Cheek, Saul Niguez and tonight's captain Jorginho all come into the side for this FA Cup game.

The second player to keep their place from the weekend is Mason Mount, with forwards Timo Werner and Romelu Lukaku both being introduced in the front three, after impressing from the bench at Wembley.

Teenage left-back Dylan Williams is named on the bench for Chelsea's senior team for the first time following his January move from Derby County.

Luton have made five changes from the weekend's win over Derby, with top scorer Elijah Adebayo among those missing out as Dan Potts, Luke Berry, Carlos Mendes Gomes, Peter Kioso and Admiral Muskwe all come in.

Chelsea: Kepa, Hudson-Odoi, Rudiger, Sarr, Kenedy, Loftus-Cheek, Jorginho (c), Saul, Mount, Lukaku, Werner

Substitutes: Mendy, James, Williams, Hall, Kante, Kovacic, Barkley, Pulisic, Vale

Luton Town: Steer, Burke, Lockyer, Kioso, Bell, Berry, Osho, Mendes Gomes, Potts (c), Cornick, Muskwe

Substitutes: Isted, Bree, Naismith, Campbell, Thorpe, Clark, Snodgrass, Jerome, Hylton

Referee: Peter Bankes