This is from the daily fail back in January this year. Highest spenders in the last ten years. This is combined between the clubs they've been with in that time frame.
HIGHEST-SPENDING MANAGERS OVER THE LAST 10 YEARS
1 - Jose Mourinho – £619m
2 - Manuel Pellegrini – £597m
3 - Carlo Ancelotti – £466m
4 - Roberto Mancini – £441m
5 - Pep Guardiola – £382m
6 - Rafa Benitez – £376m
7 - Louis van Gaal – £337m
8 - Arsene Wenger – £333m
9 - Brendan Rodgers – £287m
10 - Sir Alex Ferguson – £281 m
And their biggest buys.
Jose Mourinho
£32m – Diego Costa
£30m – Andriy Shevchenko
£30m – Willian
Manuel Pellegrini
£80m – Cristiano Ronaldo
£54m – Kevin De Bruyne
£49m – Raheem Sterling
Carlo Ancelotti
£85m – Gareth Bale
£63m – James Rodriguez
£50m – Fernando Torres
Roberto Mancini
£40m – Sergio Aguero
£27m – Edin Dzeko
£25m – Samir Nasri
Pep Guardiola
£40m – Zlatan Ibrahimovic
£35m – Cesc Fabregas
£34.2m – David Villa
Rafa Benitez
£34.5m – Gonzalo Higuain
£22.6m – Danilo
£22.5m – Mateo Kovacic
Louis van Gaal
£59.7m – Angel di Maria
£36m, rising to £57.6m – Anthony Martial
£31.5m – Luke Shaw
Arsene Wenger
£42.5m – Mesut Ozil
£35m – Alexis Sanchez
£16m – Santi Cazorla
Brendan Rodgers
£32.5m – Christian Benteke
£29m – Roberto Firmino
£25m – Adam Lallana
Sir Alex Ferguson
£30m – Dimitar Berbatov
£28m – Juan Veron
£27m – Rio Ferdinand
http://www.dailymail.co.uk/sport/football/article-3385270/Jose-Mourinho-biggest-spending-manager-world-football-past-10-years-makes-10.html#ixzz49YcIpghC