4) Hernan Crespo (Chelsea) – 20
Chelsea paid £16.8m for the striker in 2003. He scored ten goals in his first season at Stamford Bridge before being loaned out to AC Milan following the arrival of Didier Drogba. He went on to score another ten goals for the Blues in the 2005/06 campaign after returning from Italy.
Despite his good goal record, Crespo was again loaned out to Inter Milan for two more years before eventually re-signing for the Nerazzurri on a permanent basis in 2008.