The injury list is mounting in west London but Tuchel confirmed that Ziyech’s injury was not as severe as first feared.
“We can survive a game but we will pay the price for sure. Maybe we already do it with all our midfielders,” he said.
“Trevoh, hopefully it’s just pain but at the moment it’s very painful. We hope it’s not serious but we need further examination.
“With Hakim, I don’t think it’s bad. He got hit on his nerve and his calf was tight. We had to take him off, of course.”
Chelsea travel to Brentford for a quarter-final Carabao Cup tie on Wednesday, and it is unclear whether Ziyech will be fit to start.
The Blues then face another tough away trip to Aston Villa before ending the year with a home fixture against Brighton.