Chelsea manager Antonio Conte says striker Diego Costa is fit to face Middlesbrough on Sunday.
The Spain international will be joined by Belgium's Eden Hazard in the squad to face Aitor Karanka's men.
Defender Kurt Zouma has resumed training since suffering a serious knee injury at the start of the year and is expected to join the senior squad at the end of the month.
"The news is that I have all of the players available," Conte explained.
"They are in good form. [Diego] Costa had a bit of an injury after the Everton game, he started to train with us on Wednesday and his physical condition is good. We still have tomorrow to look at the situation tactically but at the moment he can play. Eden [Hazard] also recovered very well.
"I'm happy to have the availability of all my central defenders, it's important Kurt [Zouma] is with us.
"He is in good form in training but it's normal after a bad injury that you need time to recover. In this period we prefer him to play with the Under-23s, which he will do on Monday. It's important for him to have game time and it's fantastic to have another great player like Kurt available.
"[Oscar?] His future is with Chelsea, full stop.
"For me he's an important player in our squad.
"He's in good form but I have to choose the starting 11 every week. He's a great player and he's staying with Chelsea, it's important to give this message. I consider him an important player."
