However, the Red Devils failed to send the compulsory paperwork before the deadline thus putting a definitive end to the summer’s ongoing saga.
And, Spanish newspaper AS have revealed that Real will have to pay a compensation fee to De Gea and are set to improve the current deal of Navas.
According to the report, De Gea will receive €5m (£3.7m) in compensation, while Navas will be offered an enhanced contract with a wage increase.
All in all, Real’s goalkeeping quarrel over the summer, including the exit of Santiago Bernabeu legend Iker Casillas and the €6m signing of Kiko Casilla, has cost the club €16.5m.
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On Friday, De Gea penned a new four-year contract with United, which includes an option for a further year.
After committing his long-term future, on paper, to Louis van Gaal’s side, he made his first appearance this term in being handed a start for the clash with Liverpool on Saturday evening.