Ajax youth coach Ronald de Boer says Louis van Gaal will quit if Manchester United fail to finish in the top four.
He has predicted the 64-year-old will leave Old Trafford of his own accord if the Reds' European hopes come to nothing.
De Boer said: “Louis realises more than anyone that a club with the status of Manchester United must at least qualify for the Champions League.
“If he fails to do that then he will know it is the end of the story.
“Louis, in my eyes, is still a top-class coach and he is going to survive in Manchester. But all the criticism about the way United play is fully deserved.
"The organisation of the team is 100 times better than last season and tactically things are in a better shape. But there is still a big lack of entertainment, especially up front."