Atletico Madrid president Enrique Cerezo won't rule out bringing Chelsea striker Diego Costa back to the club.

Diego Costa, who struck twice in Saturday's 2-2 draw with Watford, has been linked with a return to Atleti.

"Right now, Diego is a Chelsea player and he has to focus on Chelsea," said Cerezo.

"But you never know what will happen in football, and sometimes players do return to their former clubs."