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Manchester United manager Sir Alex Ferguson has warned Wayne Rooney that the grass is not always greener after vowing to deal swiftly with his unsettled striker.

Rooney went public with his wish to leave Old Trafford in the build up to Wednesday's 1-0 Champions League victory over Bursaspor.

The 24-year-old striker cited a lack of ambition going forward for his decision to snub a new contract and seek an exit.

But following Rooney's personal statement, Ferguson has issued a firm warning to the England striker over his future.

Real Madrid, Chelsea and Manchester City have all been mentioned as possible destinations for the striker who still has 18 months remaining on his contract.

"Sometimes you look in a field and see a cow. You think it is a better cow than the one you see in your field. It never really works out that way," warned Ferguson.

"Some players like to think the world is better somewhere else. It never really works."

Meanwhile, an irritated Ferguson suggested he would look to deal swiftly with the situation and will meet with chief executive David Gill on Thursday morning.

"I've not read the whole of Rooney's statement," he said."I have a meeting with David Gill at 10am on Thursday. David has spoken to the owners which is important.

"What is really important is for us to put it to bed, we don't want it to become a saga.

"Sunday's game against Stoke is the most important thing. This is a bagatelle, believe me."Subscribe to Football FanCast News Headlines by Email