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Fergie calls on Berbatov to lead as O'Shea stands by

ALEX FERGUSON has challenged Bulgarian hitman Dimitar Berbatov to step up to the plate for Manchester United tonight and end his two-year goal famine in Europe.

United take on in-form Marseille at Old Trafford with the tie finely balance at 0-0 from the first leg in France, and Ferguson is aware that an early away goal from Didier Deschamps' side could change the whole complexion of the tie.

United need a hero at Old Trafford tonight and that's a signal for Berbatov to deliver. The striker has not scored in European competition since he struck against Celtic in the Champions League back in October 2008.

"I wasn't aware of that," said Ferguson when asked about Berbatov's Euro goal famine as even United defender John O'Shea has scored more goals in Europe since then.

"But he's capable of scoring all the time and he has that ability.

"It's nice to have a bit of apprehension about big ties. We've had that many times and it won't be any different tonight . We're playing a very experienced, powerful Marseille team and we will have to play well," added teh United boss.

United were dealt a major blow before kick off as key defender Nemanja Vidic looks very doubtful due to a calf injury.

That would see John O'Shea move from the midfield role which he occupied - in style - in Saturday's FA Cup win over Arsenal and play at full back, with Wes Brown playing in central defence in place of Vidic.