Antonio Conte may be forced to return to a 3-4-3 for the clash at West Ham tomorrow with Danny Drinkwater out due to illness.
Without another recognised central midfielder on the bench is Tiemoue Bakayoko starts in a 3-5-2, Conte will likely just remain with Cesc Fabregas and N’Golo Kante in the middle of the park.
Drinkwater has been out for three days with an illness so will definitely not make the team, which could mean that Ethan Ampadu could get a spot on the bench once again.
Meanwhile, with the 3-4-3 the position of Alvaro Morata and Eden Hazard’s partner will be up for grabs, and it might depend on how attacking Conte wants to be.
Pedro is usually the Italian’s preferred choice on the right wing, and with West Ham going through a wretched time sitting second bottom of the table, it could be a good time to attack.
Conte will be conscious of the fact they are away from home, but the London Stadium has hardly been a fortress for the Hammers and the Blues will fancy their chances to get all three points.
Gary Cahill will likely keep his place in the back three, with Andreas Christensen starting once again and Cesar Azpilicueta also at the back.
Victor Moses should remain in the starting XI, with Marcos Alonso coming in after his rest against Atletico Madrid in midweek.
Probable team: Courtois, Azpilicueta, Christensen, Cahill, Moses, Alonso, Fabregas, Kante, Pedro, Hazard, Morata.