The Sun says he flew into a dressing-room rage after City lost the Manchester derby to Robin van Persie’s late free-kick.
Mancini tore into keeper Joe Hart saying, “It’s your fault” as City’s unbeaten Premier League record was ended dramatically.
Balotelli was surprisingly chosen to start but was hauled off early in the second half and replaced by Tevez. A dressing-room insider said: “Mancini was going mad, he just seems to pick fights with everybody.”
Mancini was also fuming with Tevez and Nasri for their dismal efforts to keep out Van Persie’s winner.