Antonio Conte insists Chelsea will not sell Diego Costa this summer.

Costa joined Chelsea from Atletico Madrid in 2014 and has been linked to a return.

Atleti president Enrique Cerezo claimed recently that talks had begun about bringing Costa back to the club.

"Diego is our player, he’s a fantastic player for me. He’s a fantastic player with fundamental importance,” he told a news conference on Tuesday.

“For me it’s not about the possibility to go to this team, or that team, we want him to stay with us," said Conte. "He’s working very hard and he seems very happy to work with his team-mates and a new idea of football.

“The most important thing is that Diego Costa is a Chelsea player.”