Cristiano Ronaldo using the No 7 this season has been discussed by those involved in the deal to bring him back to Manchester United, raising the prospect of him wearing the iconic shirt number. United would need special dispensation from the Premier League for Ronaldo to take the shirt number from his first spell at the club, which is currently worn by Edinson Cavani and previously by George Best, Bryan Robson, David Beckham and Eric Cantona. Ronaldo’s sensational £19.7million return to Old Trafford came after the season started with Cavani given No 7 and rules stating the Uruguayan must keep the shirt during he campaign unless he leaves for another club. However, it is understood that asking for permission to change shirt numbers was broached in talks when the deal was agreed and will now hinge on Cavani and the Premier League agreeing. Anthony Martial had to give up the No 9 shirt following Zlatan Ibrahimovic's arrival in 2016, leading to some disgruntlement. The Premier League and United have not commented on Ronaldo’s shirt number and a final decision is set to be made when he is unveiled, with the 36-year-old currently in Portugal ahead of the international break. He was given the No 7 shirt when he arrived at United in 2003 as an 18-year-old. In his time at Sporting Lisbon he wore the No 28 and it has been widely reported that he asked for the same number when he moved to England but was given the number worn by some of United’s greatest players. When he moved to Real Madrid 12 years ago he could not have his favoured number as it was taken by club legend Raul. When Raul moved to Schalke 04 in Germany the next summer, Ronaldo was granted his favourite shirt number again.