4. Diego Costa – 18 goals, 30 appearances – Diego Costa was a star in Atletico Madrid’s 4-0 demolition of Chelsea a couple of years ago. Today he dons the Chelsea jersey and demolishes other teams while representing them. One of the new guard to replenish Chelsea’s striker stocks, his introduction to the Premier League resulted in 7 goals in 4 appearances. He does not back down from a fight – to leave an indelible mark on the opposition by scoring and destroying their confidence. A dodgy hamstring has not let him play a run of games together, but he is more to willing to knuckle down, taking pride in representing Chelsea, where the fans love him and oppositions do not.