He can also forget about being named Manchester United's player of the year for the fifth time in six seasons, despite there being a dearth of alternatives.
They now sit fifth with 66 points, two behind fourth-placed Chelsea who cemented the spot after collecting a vital point at Old Trafford against Manchester United.
The players just don't seem as motivated anymore as they were after Mourinho's sacking.
"You can not say there is any complacency, David is not the type to sit down and be complacent".
Ole Gunnar Solskjaer's men will tackle Huddersfield Town on Sunday in their next Premier League fixture.
And after a bright start from the hosts was rewarded by Juan Mata's 11th-minute opener, De Gea cost the Red Devils again when he spilled Antonio Rudiger's long-range effort to allow Marcos Alonso to equalise just before half-time.
Of course, Chelsea is capable of winning their remaining games and so are all our rivals but the evidence points to the opposite and there are still twists and turns left in this sorry race for Champions League qualification.
Naturally, De Gea retained the backing of his teammates.
"A draw was not a bad result for us but I think if we believed a bit more we could score another goal".
At least 41 dead as Russian Federation plane makes emergency landing
Reports of multiple injuries and fatalities are emerging from media sources, but an official death toll has yet to be released. According to the play-back of the flightradar data, made by Bloger51 in Murmansk, the plane was in the air for 27 minutes.
"But there's no chance any of us will point fingers because he's saved us so many times".
His year to forget started at the World Cup in Russian Federation, when De Gea allowed a shot from Cristiano Ronaldo to ricochet off his hand and bobble over the goal line.
Even before the World Cup, he had let a shot from Switzerland defender Stephan Lichtsteiner creep under his arms, leading to a goal in a warm-up game.
"Chelsea have to be in the Champions League".
De Gea's mistakes come as speculation grows surrounding his future.
While there has been much talk of Sergio Romero's quality as a back-up keeper, the Argentine has hardly been infallible when he has had a run in the side during his four years at the club. The Argentina goalkeeper rarely fails to impress when he stands in for De Gea in cup competitions and must be the most highly-qualified understudy in English soccer.
Chelsea - 68 pointsMaurizio Sarri launched an uncharacteristically staunch defence of his first season in charge at Stamford Bridge after a 1-1 draw away to United on Sunday consolidated his side's place in the top four.
This could certainly develop in the next few weeks.