Manchester United defender Nemanja Vidic admits they're looking over their shoulders at Manchester City.

Vidic refuses to rule out rivals Manchester City as title contenders despite their recent run of five draws in a row.

"They have good players, but we will see how good their team is," Vidic said.

"I don't want to say they don't have a chance. When you look at the players they have, you need to respect their team.

"And they are definitely going to take points off the top teams."