Due to their summer transfer ban, the La Liga side cannot consider playing Costa until January, so complicating the issue.
“We’re talking about the players who are here, and how the team worked to keep all the players here. All the players want to stay,” said the 47-year-old specialist.
“They want to achieve even better goals and do even better.
“Diego Costa? If he comes in January … We can not say anything about it at the moment. No, I will not talk about him now. He’s a Chelsea player. We’ll talk about the boys who are here right now. This is what matters.”