Cristiano Ronaldo sent shockwaves through football on Sunday, when he revealed he was unhappy at Real Madrid. The world's most expensive player spoke out against what he described as a 'professional issue' that was contributing to his sadness in the Spanish capital.

His refusal to celebrate either of the two goals he scored in the weekend win over Grenada, sparked a flurry of speculation about the Portuguese forward's long-term future.

Many consider Ronaldo's comments as an attempt to engineer improved terms on his current deal which, at £10million a year, still has three seasons to run. But, in an exclusive poll - taken by nearly 30,000 people - GiveMeFootball fans had their say, with 60 per cent of voters expecting him to leave the Santiago Bernabeu.

Real Madrid chairman Florentino Perez has defiantly dismissed suggestions that Ronaldo wants to quit Los Blancos: "If he wanted to leave he'd have said so when the transfer window was still open," the 65-year-old told Marca. "There are other reasons behind it."

Bought from Manchester United for £80million in 2009, the 27-year-old led Real to the domestic title last season, scoring 46 goals in 38 La Liga games, and 60 in all competitions.

Ronaldo has raced to 150 goals for the club at a rate of more than a goal a game, and is the fastest Real Madrid player to reach 100 goals, as well as becoming the first player ever to score against every other team in a single La Liga season. But, despite his imperious form over the past three years, the Portuguese continues to be eclipsed by Lionel Messi's heroics at Barcelona.

In another online GMF poll, fans were asked if Ronaldo were to leave, what would be his most likely destination. With over 60,000 responses, 41 per cent of voters believe a return to Old Trafford is the most feasible option - a move that would reunite him with former mentor Sir Alex Ferguson.

"When I arrived at United I was 18, and Sir Alex was like a father to me. He taught me many things. I worked with him for six years, and he is a great human, a great coach. Sir Alex and Jose Mourinho are the two best coaches in the world."

Chelsea received 23 per cent of the vote, with Roman Abramovich's extravagant spending in the summer transfer market forcing many people to stand up and take note, that the Blues could be a re-emerging force, particularly after their Champions League glory last season.

How likely a move to Stamford Bridge is for Ronaldo remains to be seen, but one place the free-scoring forward will not be heading - at least in the immediate future - is fellow Premier League big-spenders Manchester City, despite Roberto Mancini's side finishing third in the poll with 21 percent of the vote.

With Ronaldo sharing a very close bond with his old United boss, Ferguson, the Real star wouldn't risk hurting the Scot, by moving to the Etihad Stadium. A source close to the Portugal captain explained: "Cristiano has always been close to Alex Ferguson, and even now, they still talk.

"Cristiano simply would not risk hurting him by joining Ferguson's immediate rivals."

Barcelona received eight per cent of votes cast, but again, switching allegiances from one La Liga powerhouse to another is an unlikely scenario, with few players having ever crossed that Spanish divide before.

And finally, in fifth place with seven per cent, came Ligue 1 giants Paris Saint Germain, who have flexed their newfound financial muscle with the acquisitions of Zlatan Ibrahimovic, Ezequiel Lavezzi and Thiago Silva amongst others during the summer transfer window.

There's no doubt the French outfit have the money to lure Ronaldo to France, but whether or not he would be willing to move to Paris, and play in a sub-standard division, in comparison to the superior La Liga, or Premier League remains to be seen.

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