Darren Fletcher has sent a word of warning to his Manchester United team-mates not to take Liverpool for granted.

The Red Devils seeks a revenge when they meet this Sunday at Old Trafford after being beaten in their last three meetings and Fletcher is wary of the Benitez’s orchestra.

"It would be very dangerous to think this is a poor Liverpool side coming to Old Trafford because they will be anything but," Fletcher was quoted in Mirror Football.

"It would be a huge mistake to think that Liverpool aren't a threat. They maybe haven't had the season we expected after the one they had last year, but they are still a dangerous side.

"They still have a lot to play for because they are battling for fourth spot. On their day they are capable of beating anyone. If you are not 100 per cent focused and you make mistakes, then Liverpool will punish you."

Fletcher also reminded his team-mates last season’s 4-1 mauling by Liverpool and he believes that it can happen again.

"Last March's defeat was difficult to swallow at the time," he said. "We were in the middle of the run-in and to lose against Liverpool, especially at home, was tough.

"We know what they are capable of because they pushed us all the way [last season] and dished out that defeat here, and the one at Anfield this season. They are still fresh in our memories."

However, Fletcher did not hold his surprise by Liverpool's struggles this season saying he had expected them to be genuine title contenders depending on the way they finished last season.

"After last season everyone thought they would kick on this year and be right up there again," said the Scotland star.

"A lot of people tipped them to win the league, but it hasn't turned out that way for whatever reason.

"It's a real surprise to me they haven't been up with us, but they'll still be fired up to win at Old Trafford again."

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