Cristiano Ronaldo
Real Madrid's Cristiano Ronaldo celebrates scoring the winning goal against Manchester City during their Champions League Group D football match at the Santiago Bernabeu stadium in Madrid, on 18 September, 2012Reuters

Summer transfer window is yet to open but rumours of big names switching over to other clubs are getting out of hand. Manchester United are one of the clubs that has been linked to some of the biggest names in football, and they may even face the dilemma of choosing between Cristiano Ronaldo and Gareth Bale if media reports have anything to go by.

Manchester United's new coach David Moyes is keen to sign 23-year-old Tottenham's Gareth Bale and even set to splash a record £85million deal for the Footballer of the Year, according to The Sun.

But interestingly, Manchester United are said to equally keen to bring their former winger Cristiano Ronaldo back to Old Trafford and even willing to beat the record £80million transfer fee Real Madrid paid in 2009.

The 28-year-old Portuguese star is in line for a possible transfer to his former club - Manchester United - after he rubbished reports of him signing a new deal with Real Madrid.

Now, David Moyes, who has been handed more money to spend on players, will have to choose either Cristiano Ronaldo or Gareth Bale as buying both will not be feasible owing to their huge fee.

Meanwhile, Ronaldo has rubbished media reports that he has signed a new deal with Real Madrid, thus sending out a hint that his days at Bernabeu are numbered.

"All the news about my renewal with Real Madrid are false," announced Ronaldo on his official Facebook and Twitter pages.

The announcement came just on the heels of Real Madrid President Florentino Perez's declaration that the 28-year-old Portuguese star, who has two more years remaining on his deal, would sign a new deal and retire at Real Madrid.

"I would bet Cristiano will retire at Real Madrid because it's the natural thing. We will negotiate the new contract before the start of La Liga and I am convinced that everything will come out well," The Sun quoted Perez as saying.

It may be recalled that Ronaldo had expressed his unhappiness at Real Madrid last September when he refused to celebrate a goal against Granada. He had said, "I'm sad, when I don't celebrate goals it's because I'm not happy," adding, "Real Madrid know why I'm not happy."