The Manchester United boss said his star goalkeeper would be well aware of the enormity of his mistake in Spain's draw against Portugal
Spain goalkeeper David de Gea will know his error against Portugal was a "bad mistake", according to his club manager Jose Mourinho.
De Gea fumbled a tame Cristiano Ronaldo strike into the net late in the first half of the enthralling 3-3 World Cup draw between the teams on Friday.
That goal completed Ronaldo's brace and the Portugal star sealed a hat-trick with a stunning 88th-minute free-kick to earn his side a draw in the Group B clash.