Everton striker Romelu Lukaku is staying calm over talk of a return to Chelsea.

Chelsea are set to revive their interest in Lukaku, if Diego Costa leaves next summer.

He told talkSPORT: "At the moment, I'm just focused on the season.

"I'm not reading anything about it, I'm just focused with the team and whatever you guys write is whatever you write."

Lukaku added: "It is going to be really difficult [to finish in top four or five], but it is a nice challenge. That is why we play football."