The focal point of their attack for the last 4 years has been Tadic, a player bought from Southampton who while quite decent was no star in Premier League, and another crucial player for them is Haller who was a £40m failure in England. We bought one of their best players and he turned out quite poorly in our system and league too.This take surprises me. The current Ajax team is made of players that are mainly inferior to United's from a technical and athletic standpoint. The way people are talking about them you would think that people haven't seen them outside of Ajax, most of them weren't particularly good.
Also people should keep in mind that LVG made a worse set of player play technical possession Football from day one.
He should be fine with the quality and resources at his disposal at United.