Mario Balotelli fell out with Manchester City's fans and his own team-mates as the club's title challenge looked to be on the verge of cracking up. The 21-year-old Italian was booed by all four sections of the Etihad as he tussled with Aleksandar Kolarov over who should take a free-kick midway through the second-half with City trailing 3-1 to Sunderland