Manchester United boss Sir Alex Ferguson doesn't regard their three point lead over Manchester City as any great advantage.

Whilst the United boss is in confident mood, he admits that their advantage is only slight over Roberto Mancini's men.

"We all know that football can turn around and bite you," he said.

"That's why we make the point about experience. We have a small advantage, not a great advantage, and one that can change in a single game."