Wojciech Szczesny (19, Arsenal)
Something of a goalkeeping prodigy, Szczesny started training with the Legia Warszawa first team as a 15-year-old. He's only played in the League Cup since joining Arsenal in 2006 - and is currently on loan at Brentford - but Arsene Wenger has the highest of hopes for the youngster and has gone on record as saying that the Pole "will one day be Arsenal's No.1".