Claudio Villa/Getty Images
Back in 2010, Balotelli came under a lot of criticism from Inter fans for appearing on the Italian TV show Striscia la Notizia—"Strip the News"—wearing the jersey of cross-town rivals AC Milan.
It was, in their eyes, insulting to see their striker wearing the colours of their rivals. But Mario has never made any excuses for being a Rossonero. In fact, it was even a source of much humour in the dressing room during his time at the Nerazzurri.
Speaking about Mario's love for all things Milan, former teammate Marco Materazzi said:
My friend Mario has always been a Milanista, so it’s no surprise he is there now. Milan was his dream. Do you know how many times I had to chop up his Rossoneri socks in the locker room? His Mum bought them for him and he would wear them in training, so I’d sneakily cut holes in. He laughed like crazy.
These days, few players are lucky enough to play for the club they grew up supporting, and it's doubtful that prior to joining Inter all of the squad were Interisti. But with Mario's affiliations being so well-known, it would have caused friction sooner or later.