The 43-year-old has suggested the Manchester United manager's ego damaged the country's bid to win a first World Cup following their semi-final shootout loss to ArgentinaLouis van Gaal following Netherlands' exit from the World Cup, insisting the squad were "tactically overloaded".
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The 43-year-old, who worked under the new Manchester United manager at Bayern Munich, has hinted Van Gaal's ego hindered Netherlands' tilt at the World Cup and the squad ultimately suffered because of him.
"Van Gaal wanted to prove that he didn't just get to eat the football cake but the very biggest football cake," he said, as quoted by Bild.
"Then the 'god of football' or the Argentinians [in this case] come and say: 'No wait, you stay here'.
"Changing the goalkeeper [for the penalty shootout win over Costa Rica] was an absurd decision that showed a coach, and he is a great coach, wanting to land a major coup. It came back as a boomerang [in the defeat to Argentina].
"They lost their style of play during the tournament. They were tactically overloaded and the whole time they were afraid to play the ball up front."