Sanna Guidetti

A 19-year-old Swedish striker on loan from Manchester City arrives at a struggling Feyenoord and proceeds to score 20 goals in 23 games, including a legendary hat-trick against Ajax, turning himself into an instant Rotterdam hero before a sudden illness cuts the fairytale short.

Relive the U21's magical summer of 2015, look back on the excitement, the magic and take part in never before seen interviews and pictures. 2015 offered an unforgettable "Golden Summer".