Cristiano Ronaldo
Manchester United have reignited their interest in signing Real Madrid star Cristiano RonaldoGetty

Manchester United are reportedly interested in resigning Cristiano Ronaldo from Real Madrid, six years after the Portuguese forward joined the Spanish capital club in what was then a world-record £80m ($124m) move.

According to the Manchester Evening News, the Red Devils are still on the look-out for a marquee signing as Louis van Gaal looks to build a title winning squad ahead of the 2015/16 campaign.

The 20-time English champions have already brought in Morgan Schneiderlin, Memphis Depay, Bastian Schweinsteiger and Matteo Darmian this summer, but the report claims that they are preparing a new club-record move for the Portuguese international.

The Premier League club have been linked with a move for Ronaldo in the past during David Moyes' reign, but the three-time Ballon d'Or winner quashed all speculation by signing a new deal keeping him at the Santiago Bernabeu till until at least the summer of 2018.

"There was talk of Ronaldo when I first arrived. We were close to getting a couple of major names," former United manager Moyes said in 2014, as quoted by the Manchester Evening News.

However, it is claimed that Ronaldo is not happy with the appointment of Rafael Benitez as the new coach after publicly backing Carlo Ancelotti to continue as manager of the 10-time European champions.

According to Spanish publication AS, the relationship between the former Napoli manager and Ronaldo are already on the rocks after video clippings showed the forward being incensed with the manager during a training session on 22 July.

But Benitez has brushed off such suggestions and indicated that he has a normal relationship with the Portuguese national team skipper and even went on to label him the 'best player in the world', something he had refused to do after taking over the club earlier in the summer.

Louis van Gaal recently hinted at a surprise signing, and with Angel Di Maria's future in doubt, with a Telegraph report suggesting that the Argentine is close to completing a move to Paris Saint-Germain, the Red Devils will want a marquee signing to fill the void.