Donny van de Beek was played out of position at Manchester United and the coaches he played under 'have no idea'.
That's according to Jaap Stam who pulled no punches in his assessment of his former club's treatment of Van de Beek.
The Dutch midfielder will play the rest of the season at Everton having completed a loan deal on transfer deadline day.
It comes after the 24-year-old has featured in just eight Premier League matches this campaign under Ole Gunnar Solskjaer and Ralf Rangnick.
He'll be hoping to resurrect his budding career at Goodison Park following a nightmare spell at Old Trafford.
And former Man United defender Stam believes his compatriot can still be a success at the club.
But he's slammed his old side over how Van de Beek has been treated, claiming coaches he played under have 'no idea'.
Speaking to De Telegraaf, he explained: "The lack of a philosophy or of a coach who just muddles around and has no idea is the problem there.
"Also it has harmed Van de Beek, because he really has the qualities to succeed at Manchester United in the long run.
"With his qualities, Donny was a perfect fit for Ajax and the Eredivisie.
"But Donny couldn't get his head around the way United are playing. Hopefully he will pick up his game again at Everton."
Stam added: "The manager had to make the choice to place him as one of the two defensive midfielders so that he could help in the build-up and play higher. For example, next to Scott McTominay and Bruno Fernandes before that.
"It all depends on chance what they show. Donny works hard, runs a lot and is also good on the ball. You can vary with him.
"He can help build up backwards and has the content to play box-to-box. Only he was not awarded such a role."
Topics: Donny van de Beek, Manchester United, Football
Nasir Jabbar