Ajax youth coach Ronald de Boer says Juan Mata isn't good enough for Manchester United.
He speaks to Van Gaal on a regular basis – but that has not stopped him casting a critical eye over United.
He said: “Louis has very few players who can make the difference at United. When I look at Bayern Munich, for example, they have a player in almost every position who really stands out.
"Juan Mata is just not good enough to carry the team when it comes to attacking. He is more the type who has to work for the real big players."