Chelsea manager Thomas Tuchel says he is concerned about the injury that Trevoh Chalobah picked up in the 2-1 win over Watford last night.
The centre-back had to be substituted on the hour mark due to a hamstring strain and he is now likely to be out for Saturday’s game versus West Ham.
Reece James was not in the matchday squad for the trip to Vicarage Road after sustaining a knock to his ankle but it is hoped that he will be available for the match at the London Stadium.
N’Golo Kante has still not returned to training due to a knee issue and he remains a major doubt for the London derby against the Hammers this weekend.
Mateo Kovacic remains sidelined with a hamstring injury, which has kept him out for over a month, while Ben Chilwell will be on the treatment table for at least another five weeks after suffering knee ligament damage in the 4-0 victory against Juventus.