Chelsea striker Diego Costa has a "small chance" of being fit for the Premier League trip to Manchester United, according to manager Jose Mourinho.
Costa missed the Blues' last two matches against Crystal Palace and Maribor with a long-term hamstring injury while the Spanish international having also been in hospital with a stomach virus.
Mourinho said: "Diego Costa has a chance, a little chance. Remy no chance, Diego has a little chance, the same [John Obi] Mikel and Ramires. The only one that I can confirm has no chance is Remy.
"Everything has happened to him [Costa]. He was obviously injured, a hamstring, and he had to go to the hospital with a viral situation that we didn't manage to resolve without being in hospital over one night.
"I think it happened before Maribor but again with Maribor he wouldn't be ready from his injury.
The Chelsea boss added: "The problem is that being injured didn't help the recovery process because they didn't want him at Cobham. So all the medical treatment was the staff meeting him at his house.
"I don't know [whether Drogba can play]. I am telling you the truth, I don't know. He is OK, there I no reaction from his injury. It was a good training session from him. It was good, we are happy with the reaction.
"I am considering nothing at the time, I am waiting for tomorrow as to what players are available."