#3 Roberto Mancini vs Carlos Tevez
Carlos Tevez didn't do his reputation any favours during his brief spat with then Manchester City manager, Roberto Mancini during the 2011/12 season.
Disgruntled with his position in the Manchester City squad, Tevez famously refused to come on as a substitute during a Champions League clash with Bayern Munich in a move that enraged both Mancini and the Manchester City fanbase.
The two men would eventually patch it up and Tevez would continue to play for City for another season before parting ways and signing for Juventus in 2013.
Edited by Prathik R