Manchester United's defending is a worry, admits Vidic

United failed to take full advantage of Chelsea and Arsenal's defeats on Saturday as they twice went behind at the Reebok Stadium, before the substitute Michael Owen equalised 16 minutes from time.

They have now conceded nine goals in their last five games and kept just three clean sheets this campaign, all at Old Trafford. "Yes, we're concerned," United's on-field captain told MUTV. "Over the last few years, we haven't conceded many goals. We always looked strong and we didn't give teams many chances. But in the last few away games, we haven't kept clean sheets, which is very disappointing."