Estadio Vicente Calderón star will move to Old Trafford next season.
Manchester United manager Sir Alex Ferguson has confirmed Atletico Madrid goalkeeper will sign for the club this summer.
The 20-year-old has been bought to replace Old Trafford legend Edwin van der Sar who will retire after the Champions League final against Barcelona on Saturday.
Ferguson has been scouting all over Europe and De Gea has got the nod ahead of Ajax’s Maarten Stekelenburg and Schalke’s Manuel Neuer.
The fee is understood to be around £18.3million with additional add-ons rising to £23million. De Gea is believed to have signed a five-year deal.
Ferguson reckons United have got the perfect replacement for Van der Sar and revealed they were chasing their man for a long time.
“We’ve been working on it for quite a while, we identified him a while back as one we should go for,” he told Sky Sports.
“He’s a young goalkeeper, very quick, with good composure and presence.
“He’s an outstanding replacement for Edwin van der Sar.
“We were looking for someone with the same types of qualities. One great quality Edwin always had was his composure and organisational ability.
“David De Gea is very similar that way.”