3. Bertrand Traore
You know you are going to be something great when Jose Mourinho personally wants you at the club. Traore recently got his work visa for Britain after spending last season away at Holland. Bertand was transformed from a winger to a striker last season and he banged in 17 goals for Vitesse Arnhem.
Traore is travelling with Chelsea for their preseason and could turn out to be that unknown quantity for the Blues this season. We all know that Jose will give chances to a few players throughout the season and this could be the season for Bertand to make an impact at Stamford Bridge.