#10. Louis Van Gaal – £317 million
Manchester United manager Louis Van Gaal has spent an incredible £317 million, but not just during his time in England. Before signing for the Old Trafford club in 2014, Van Gaal had managed Bayern Munich, AZ Alkmaar, and FC Barcelona. Van Gaal was responsible for big money signings like Mario Gomez, Arjen Robben, and Manuel Neuer during his time in Germany and the spending didn’t stop there. Since moving to Manchester United, Van Gaal has spent a lot. Angel Di Maria cost close to £60 million, Luke Shaw cost £30 million, and Anthony Martial could cost United close to £50 million.