4. Cesc Fabregas (Arsenal and Chelsea)
Only 16 when he made his move from the Barcelona academy to Arsenal in September 2003, Cesc Fabregas shocked the Premier League with his talent. It was the 2004/05 season when he became a regular in the midfield before being named captain at the age of just 21. Cesc broke several records as an Arsenal player including being their youngest ever first team player and their youngest ever goal scorer, both achieved in his first season in London.
However, after 303 and 57 goals, he decided to move back to Barcelona after failing to win the Premier League.
A trophy-laden three-year spell at the Camp Nou meant a new challenge in England was waiting for Fabregas, this time, surprisingly, with Chelsea. Since his move to Stamford Bridger he has won that elusive top flight title, the League Cup and produced the most assists in the 2014/15 season (21).