Thomas Tuchel makes six changes from the side that started Tuesday’s draw with Brighton. Edouard Mendy returns in goal and there is a place for N’Golo Kante in midfield.
Cesar Azpilicueta, who is also back in the starting line-up, makes his 421st appearance which moves him equal eighth in Chelsea’s all-time list. He is expected to play right wing-back with Ben Chilwell replacing Marcos Alonso on the left. Returning to the defence is Thiago Silva.Mason Mount will move into a more forward role than during the Brighton game, playing in attack with Christian Pulisic and Timo Werner, who is the sixth change.
Tammy Abraham, who last played two months ago, is on the bench.
Jesse Lingard, a doubt ahead of this game, is fit to start for West Ham but they are without suspended defender Craig Dawson. Fabian Balbuena and Ryan Fredericks come into their side. Chelsea: Mendy; Christensen, Thiago Silva, Rudiger; Azpilicueta (c), Kante, Jorginho, Chilwell; Mount, Werner, Pulisic.Subs: Kepa, Alonso, James, Zouma, Gilmour, Havertz, Hudson-Odoi, Ziyech, Abraham.
West Ham: Fabianski; Balbuena, Ogbonna, Diop; Coufal, Noble (c), Soucek, Fredericks; Fornals; Bowen, Lingard.Subs: Randolph, Trott, Alves, Odubeko, Johnson, Lanzini, Coventry, Yarmolenko, BenrahmaThe referee is Chris Kavanagh