“We are Chelsea – one of the best clubs in the world. For this reason I think Diego Costa must stay”
“I am sure and I am very happy to train Diego and I know that he is our player and he is an important player for me, for team-mates, for the fans, for all of the people in Chelsea.
“I think Diego also feels this and I think this is important. Diego Costa is our player, he’s a fantastic player with fundamental importance.
“He’s very happy and is working hard. He showed he’s very strong player, one of the best in the world for me, and I am sure when he goes into our ideas he will score a lot of goals for us.
“We are Chelsea – one of the best clubs in the world. For this reason I think Diego Costa must stay in the best team in the world.”
Atletico have yet to make a formal bid for Costa despite their president Enrique Cerezo spending all summer talking up the possibility.