The Spanish shot stopper made four saves during United’s 1-0 victory over bitter rivals Liverpool in the Premier League at Anfield on Sunday afternoon.
De Gea was on the brink of a move to La Liga giants Real Madrid in the summer before his proposed move fell through on the Spanish league’s deadline day.
Former Arsenal striker Wright believes De Gea has been playing a key role in holding together United’s top-four challenge so far this season.
“Man United would be mid-table without David De Gea!” Wright told The Sun.
Wright added: “They’re not going to win the league because they don’t have enough shots on goal to convince you they’re about to go on a long winning run.”
The 20-time English champions have conceded 20 goals in 22 Premier League games so far this season.
Louis van Gaal’s side are in fifth place but a mere two points behind Tottenham Hotspur, who occupy the final Champions League spot.
The Red Devils host Ronald Koeman’s Southampton side at Old Trafford in their next Premier League game on Saturday afternoon.
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