SkySports | Chelsea striker Diego Costa ponders return to Atletico Madrid SkySports Chelsea striker Diego Costa has discussed the idea of a return to former club Atletico Madrid and concluded: "You never know". The 27-year-old Spain international has struggled to recapture his excellent first-season form for the Blues this term. Chelsea 2 - 0 FC Porto Chelsea beat Porto to top Champions League group Chelsea News: Costa's exit hint, Pato spotted at the Bridge, Liverpool ... |