Sky Sports is reporting that the Portuguese worldwide is interested in the possibility of a move back to Old Trafford this summer.
During his tenure he managed to bring in some of the best global footballers, including Luis Figo, David Beckham, and Cristiano Ronaldo.
Cristiano Ronaldo's advisers are telling clubs that he wants to leave Real Madrid for a "fresh challenge", with a fee of €150 million being mooted, and not because of the accusations of tax fraud he is facing in Spain.
The players' advisers, though, have been told to find a way out of Spain for Ronaldo, who is apparently upset after he was recently accused of tax evasion amounting to £13m.
According to Portuguese daily A Bola, the 32-year-old, who is currently on worldwide duty with Portugal for the Confederations Cup, has been left angered at his treatment by Spanish tax authorities and now wishes to leave the country.
In an interview with La Sexta, Tebas also stated his belief that the charges will prove to be unfounded, amid rumours of a return to Manchester United or a switch to Paris Saint-Germain. The former United star has a release clause of one billion euros ($1.12 billion) written into his Real Madrid contract, having signed a five-year deal in November 2016.
That makes it a direct contribution to a goal every 64 minutes, which makes it unsurprising that Ronaldo has also managed to win the prestigious Ballon d'Or four times.
The four-time Ballon d'Or victor spoke briefly when quizzed on the subject by reporters following a training session with Portugal on Wednesday, saying he had a "clear conscience".
It is in Real Madrid, in particular, where Ronaldo's true potential has been unleashed as he has been one of the most prolific players in the world over the last eight seasons.
The Portugal worldwide is in Russian Federation at the Confederations Cup and agreed to speak to Zidane again once the tournament is over. Ronaldo played under fellow compatriot Jose Mourinho at Santiago Bernabeu and Manchester United could still afford his services.