He knows what a fluid system is like from Ajax. United demand a fluid front 4/5 who can constantly change positions on the pitch. Van de Beek is a master of that trade.
Has a brilliant footballing IQ. Won't always be overboard with his passing like Fernandes. He'll do the creation job with movement and graft.
Can't exactly play as a sole DM. But he needs to have the ability to express himself further up the pitch. Combine his IQ with his workrate and he's just a wonderful footballer.
He offers so much of what United need. From positional versatility, suitability to the system, intelligence, huge potential, work-ethic and depth. Reccomended him in the past too.