Diego Costa is racing to be fit for Chelsea’s trip to Arsenal on Sunday.
The Spanish striker is struggling for fitness as he battles to overcome a recurring hamstring complaint.
Didier Drogba is available despite an injury scare but Loic Remy has been ruled out.
Blues manager Jose Mourinho will assess Costa before deciding whether to risk him against the Gunners this weekend.
Mourinho said: “Diego let’s make a decision tomorrow.
"He’s a very important player for us but the reality is that we are coping with difficulties of every match without him.
"Remy did well for us and Didier is doing well for us. The team is playing in a different way to adapt with the two strikers.
"We are doing our job we played amazingly well during most part of the season scoring a lot of goals controlling the games very very well by having a very good quality in our possession.
"In the last period we are playing in a different way. We are more strategic more, we are less artistic but we are having results.
"I would love for Diego to be back but I trust the other people."
Chelsea otherwise have a clean bill of health ahead of the Arsenal game, with Mourinho boasting a 12-match unbeaten streak against Gunners boss Arsene Wenger.