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Villas-Boas finds surprise ally in Rooney

Chelsea's under-fire manager Andre Villas-Boas has been given the support of an unlikely ally -- Wayne Rooney.

The Manchester United striker has laughed off suggestions Villas-Boas could be sacked after just four months in the job.

While Rooney admitted he has been surprised by the Blues' defensive frailties this season, he believes letting Villas-Boas go -- and beginning a search for a seventh manager in four years -- would be a step back for the west London club.

"There's a lot of people saying he should be sacked, that Chelsea should make another change," Rooney said.

"There's no need to do that, I cannot see the point in that at all.

"I must admit I've been surprised by Chelsea's problems because in the last few years they've always been so solid, so hard to score against and so very difficult to beat.

"This season that hasn't been the case but they've a new manager and a new way of playing which will take time to settle."

Villas-Boas has insisted owner Roman Abramovich (pictured) has not given him a deadline to turn the club's season around.

The Champions League Group E match against Valencia on Tuesday week could be the defining game for the young Portuguese boss, as the Blues must win or draw 0-0 to avoid crashing out of the competition.

Abramovich's patience would be tested to the limit if Villas-Boas oversaw exits from the Champions League and the Carling Cup (they play Liverpool on Tuesday in the quarter-finals) and more poor league results.

But the Portuguese stressed: "The contract is a three-year contract."

However, the length of a manager's contract has never stopped Abramovich wielding the axe in the past, and Villas-Boas accepted his job ultimately depended on turning around Chelsea's worst start to a season since the Russian bought the club.

"Results in football are the key to a manager's sustainability," he said.