Because the Old Trafford club might soon consider knocking a few quid off of that offer.
And Europe’s big clubs won’t be queuing up to sign the Spanish shot stopper in this form.
De Gea’s latest howler cost Ole Gunnar Solskjaer’s side against Chelsea as they let slip a vital three points in the race to qualify for the Champions League.
United were leading and looking in control after ex-Blues man Juan Mata fired the home side ahead on his 31st birthday.
But De Gea decided to hand out his gift to the wrong Spaniard as he fumbled Antonio Rudiger’s speculative effort from long range and Marcos Alonso reacted quickest to turn home the rebound.
Suddenly the confidence vanished from all those in red on the pitch thanks to the man in green’s blunder just before the break.
Solskjaer’s side had looked like a team rejuvenated in the previous 43 minutes. For the next 47 they looked like a team in a run of just two wins in 10 games.
Not even a late save to deny Gonzalo Higuain could spare De Gea his blushes. The Spaniard is out of contract at Old Trafford at the end of next season.
Juventus, Real Madrid and Paris St-Germain are monitoring the situation. De Gea’s agent will hope they haven’t been monitoring his form in recent weeks.
This is the eighth time in United’s last nine games that a mistake from the keeper has cost United a goal.
Not the usual form of a keeper who has been voted United’s player of the season in four of the last five years and in the PFA team of the year for the last four.
He is obviously still a great keeper – you don’t lose talent overnight. But he is in the worst form of his career and that has to be a worry for United and Solskjaer.
They need to get him to sign a deal and hope once his future is sorted then his mind will be fully back on the job.
But one of the reasons De Gea has been hesitating on committing to a new contract is because he wants to see if United will be consistently qualifying for the Champions League.
His mistake and this result against Chelsea means they are facing a tough task to reach Europe’s top competition next season.
United remain three points behind the fourth-placed Londoners with two games to go while Arsenal sit above them by a point in fifth.
Solskjaer’s side need a few favours to be rubbing shoulders with Europe’s elite next season.
Just after Arsenal lost at Leicester, United came flying out of the traps against Chelsea and it looked like they might be about to give their top-four hopes a huge boost.
Romelu Lukaku’s clever lofted pass allowed Luke Shaw in to cross for Mata and he turned home in just the 11th minute.
It was United’s first goal from open play for 537 minutes which shows how the initial free-flow attacking football under Solskjaer had recently disappeared.
But they were impressing here until that mistake from De Gea changed the game.
This was an example of why these two sides are miles behind the Premier League’s top two as the game was lacking in quality.
Marcos Rojo – after earlier escaping a red card for a double challenge on Higuain and Willian – had a header cleared off the line by Pedro in stoppage time.
Then Higuain was denied by De Gea late on for a goal that would have effectively put United out of the top-four race.
United cling on to their faint hopes – with a better grip than their keeper currently has.
MANCHESTER UNITED (4-3-1-2): De Gea 4; Young 6, Bailly 6 (Rojo 72), Lindelof 6, Shaw 7; Herrera 6, Matic 6, Pogba 5; MATA 7 (McTominay 81); Lukaku 6, Rashford 6 (Sanchez 65, 5). Subs: Romero, Martial, Pereira, Darmian.
UP NEXT: Huddersfield (a), Premier League, Sunday.
CHELSEA (4-3-3): Arrizabalaga 6; Azpilicueta 6, Rudiger 6 (Christensen 65, 6), Luiz 7, Alonso 7; Kante 6, Jorginho 6, Kovacic 6 (Loftus-Cheek 75); Willian 6 (Pedro 84), Higuain 5, HAZARD 7. Subs: Caballero, Barkley, Giroud, Zappacosta.
UP NEXT: Eintracht Frankfurt (a), Europa League, Thursday.
STAR MAN: Eden Hazard: Runs troubled United.
STAR SHOCKER: David de Gea: Another howler.