Manchester City midfielder Samir Nasri admits he should've been stronger in the wall for Robin van Persie's winner for Manchester United earlier this season.

City had recovered from 2-0 to be level but, as Nasri turned away, the ball went where he would have been and on into the goal.

"I don't know what went through my head,' Nasri said of that moment. 'I don't know how many times I was thinking about it afterwards.

"Eventually I had to turn off the TV. My dad said, 'Why are you scared of the ball, do you think it's going to burn you or something?'

"At the time I almost cried I was so upset with myself. How could you do that? It was a derby and with a draw we'd have stayed a few points behind them but they won it and it was a big moment in the title race."