You cannot hold it against a footballer for fulfilling his dream of playing for the biggest football club in his country, if not the entire world. De Gea possibly sees this move as the one that will also help guarantee him the role of being No.1 for the Spain international team.
Although, a goalkeeper of David de Gea's class deserves such recognition wherever he plays, especially when Iker Casillas has taken several steps backwards while Real Madrid's reported target is getting better and better.
However, Peter Schmeichel believes Manchester United can still challenge for trophies without De Gea.
The former Denmark international enjoyed a hugely successful career at Old Trafford, culminating in the historic treble triumph of 1999.
Although it took Sir Alex Ferguson years to replace Schmeichel, the Dane believes it would not be a disastrous blow if United lost De Gea this summer.
"If he wants to go he's done fantastically well for Manchester United," Schmeichel told Perform, as reported by the Manchester Evening News.
"We should be thanking him and we of course will move on.
"I think the most important thing for Manchester United is that we have a positive transfer window and we get players in that can take the club forward. It will never be about one player, it's not just about David de Gea."
It would be hugely beneficial to Manchester United if the club could manage to keep hold of the Spanish goalkeeper, but it sounds as though his head has been turned by Real Madrid's interest.
Schmeichel added that the squad needs to be hungry for success heading into the Champions League next season.
"If he wants to continue playing [for Manchester United], we'll be very happy with that. If not, we move on and the manager will take decisions on who takes over but we need more than one player - everybody knows that.
"Hopefully we have positive messages coming in terms of players coming to Manchester United and we build an atmosphere and spirit where we can move on and challenge for trophies again."