7) Roberto Firmino (Hoffenheim)
An exciting young Brazilian talent, Roberto Firmino was in excellent form for Bundesliga side Hoffenheim last season, showing ability in a variety of attacking roles to score 16 goals and provide 11 assists for his team-mates. A potentially world class winger or striker, his fine form has attracted the interest of both Arsenal and Liverpool in recent times, and it would be no surprise to see the 22-year-old make the move to a bigger club sooner rather than later.