Manchester United have been reportedly handed a major boost in re-signing Real Madrid star Cristiano Ronaldo in the summer. The Portuguese international completed a move to the Spanish capital in the summer of 2009 and will have two years left on his current deal with the La Liga side.

Cristiano Ronaldo

The Metro believes Ronaldo denied signing a contract extension and is believed to be unhappy with the way he has been treated by Madrid president Florentino Perez. The forward had earlier revealed that he is sad at the Spanish capital and with the Portuguese now failing to agree to a new deal, he has now left a door open to rejoin his former club.

Madrid president earlier admitted he is confident the former United player will renew his contract with the Spanish outfit, which could see Ronaldo earn a bumper deal at Santiago Bernabeu. Perez believes the 28-year-old will end his career with Madrid.

"I think that Cristiano will end his professional career at Real Madrid. I don't know whether the Madridistas are very concerned about the contract renewal of Cristiano. He still has a contract for two more years," the Metro quoted Perez as saying.

Earlier, report suggested the Premier League champions outgoing chief executive David Gill flew to the Spanish capital and has already contacted Ronaldo's agent Jorge Mendes over a possible return to Old Trafford. In addition to this, the Portuguese forward had earlier hinted that he could leave the La Liga side in the summer.

"I have two more years on my contract and I'm not worried about my renewal. I want to continue winning wherever. I do not care if Mourinho continues or not, I care about myself and Real Madrid," Ronaldo told Marca earlier.

Madrid are stepping up their interest in signing Tottenham star Gareth Bale in the summer. The addition of Welsh international to the La Liga side's squad would strengthen their attacking division. In addition to this, the left-footed winger would be an ideal replacement for Ronaldo, if he decides to leave his current employers.

On the other hand, if Ronaldo re-joins United, it will bolster their attacking lineup and will be a major boost for their incoming manager David Moyes in his debut season for the English champions.