Neville says De Gea's effort wasn't good enough.
"You can’t do that," said Neville. "They are big, big moments. That punch there has cost his team.
"He’s got to clear it out of his box, take everything with him. We’re talking about playing for Manchester United and trying to win a championship. You’ve got to punch that 15 or 20 yards away.
"Schmeichel, Van der Sar, he’s got to get to that level. He knows (that he’s made a mistake)."