The Dutchman’s position at Manchester United has been under threat for months after a disappointing season at Old Trafford.
“If his name were not Louis van Gaal, maybe he would have lost his job by now,” he said.
“When you look at the previous guy at Man United (David Moyes), he was not given so much time. So if he didn’t have as big a name, maybe things would have been over for him much quicker.
“They still have chances to enjoy a good season, but we know the pressure of being at a club as big as Man United. You have to be successful or you cannot stay.
“From my experience working with him as a player and then an assistant coach, I still say Louis is one of the best managers in the game. He needs time and I hope they give it to him.”