Real Madrid star has agreement with Man Utd over summer move
The Colombia international has been heavily linked with a move away from the Bernabeu.
Sky Sports said that Manchester United have been offered the chance to buy the 25-year-old.
The La Liga giants are reportedly willing to sell the playmaker, who has struggled to settle in since joining from Monaco in 2014.
Rodriguez struggled to get game time under Zinedine Zidane this season, starting just 13 La Liga clashes.
He netted 11 goals and chipped in with eight assists in all competitions this season.
They say Real president Florentino Perez is said to want £70m (€80m) for Rodriguez but Mendes has other ideas.
Don Balon say he has ordered the club to back the Real star's move, otherwise he will end up signing a new contract at the Bernabeu.
Zidane is reportedly keen to axe the Colombia star and has told Perez to sell him this summer.