TheDailyMail:
Sulky Mario Balotelli stormed down the tunnel when he was substituted by manager Roberto Mancini after just 55 minutes of Manchester City's victory against Sunderland on Saturday.
And within hours, the 22-year-old Italian had boarded a budget airline flight from Manchester back to his homeland.
Does someone need to cry to his mummy because he got subbed :/
Have been learning about this in college, he hasn't got the Mental Resilience to be subbed off or not start..
Which he should have by now as he is 22 and 'mature'
This is a daily mail story... I would take it with a pinch of salt.