Football managers who’ve spent most since 2004: Arsenal boss ahead of Guardiola, Chelsea’s Mourinho with £849m

6) Sir Alex Ferguson – £404m

Always a big spender at Manchester United, Sir Alex Ferguson makes this list despite retiring two years ago, with Wayne Rooney, Dimitar Berbatov and Robin van Persie among his biggest buys in the last decade.

5) Arsene Wenger – £413m

A surprise to see so high, but Arsenal manager Arsene Wenger has started to splash the cash in recent years, bringing in big names like Mesut Ozil and Alexis Sanchez.