10. Roberto Mancini
In at No. 10 is a coach who often divides opinion, but just as regularly gets results.
Roberto Mancini won the Coppa Italia in 2001 and 2004 with Fiorentina and Lazio, respectively, before going on to manage Serie A giants Inter Milan.
It was at the San Siro where he won three Serie A titles, plus two more Coppa Italias.
The former striker then went to Manchester City, who won their first league title since 1968 under his management - not to mention an FA Cup.
Had his record in the Champions League been better, Mancini would be even higher in this list.