The Nice hitman took some time on Twitter to recount City's famous 2012 title win that was won on the last day of the season.
Balotelli assisted the winning goal, scored by Sergio Aguero, which handed City the title over their rivals.
The tweet read: "I have a bit of melancholy I just review the winning match title vs qpr.. that was amazing and I really loved it.#mutdsorrynotsorry #lol."
I have a bit of melancholy I just review the winning match title vs qpr.. that was amazing and I really loved it.#mutdsorrynotsorry#lol
— Mario Balotelli (@FinallyMario) July 5, 2017
Best. Assist. Ever. Cheers, Mario.
— Chris Schilling (@schillingc) July 5, 2017
Thanks for the flick Mario! Magic pass to @aguerosergiokun
— Frank Mitchell (@frank_broadcast) July 5, 2017
Will remember that moment as long as I live!
— Kevin Taylor (@tayke2) July 5, 2017
But some United fans didn't take too kindly to the reminder and fired back with some shots of their own.
Ur career ended that day tho am I right?
— Dannyfreeburn MUFC (@dannyfreeburn) July 5, 2017
In fairness you were the better team.... just a shame WE are the better club. #WhyAlwaysUnited? #MUFC@ManUtd
— Darragh McEvoy (@damagecasedazz) July 5, 2017
Then you got sold and now play for Nice#lol
— J (@JeffUtd9) July 5, 2017