Chelsea full - back Felipe Luis reckons the striker is a future Ballon D'Or World Footballer of the Year winner .
Chelsea full - back Felipe Luis arrived from Atletico Madrid along with Costa after winning the Spanish title and reaching the Champions League final last season .
Chelsea full - back Felipe Luis , who arrived from Atletico Madrid along with Costa after winning the Spanish title and reaching the Champions League final last season , reckons the striker is a future Ballon D'Or World Footballer of the Year winner .