Jose Mourinho says Chelsea are 'trying everything' they can to get £32m striker Diego Costa fit in time to face Everton.
Costa has made a superb start to his Chelsea career, scoring two decisive goals, an equaliser against Burnley and the opener against Leicester, in two matches.
But the 25-year-old suffered a minor muscle injury on Thursday and is now battling to be fit for the game on Saturday evening.
Speaking at his pre-match press conference, the Chelsea manager said: "We are trying everything for him to play tomorrow. He didn't train for the last two days. Today is the last day."
The Chelsea manager, who also admitted he needed to sell at least one foreign player, confirmed that Costa would not be starting the match even if he passes a fitness test.
"If the reaction is positive he could be on the bench, if not, we don't select him," he added. "At the moment, I don't know.
"He is a big doubt, let's see. Everyone else is fit."
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