Manchester City boss Roberto Mancini has told Mario Balotelli to keep his shirt on.
In victory at Manchester United, Balotelli was booked after scoring the first goal for revealing a T-shirt with the words 'Why always me?'
Mancini said: "I didn't see it but it's Mario. I think he likes to show it to our supporters because he's crazy. Next time it's better he keeps his shirt on.
"I joke when I say 'crazy' - I love him because he's a good guy."