He doesn't seem like a Man Utd manager to me, either. When was the last time he spent any period of time in a big job? It was back in the old Ajax days.
Still, he seems to be heavily linked now, maybe with Kluivert and Giggs alongside him. To me this seems that United want him to be a 'fixer', a strong character in charge for at least a short period of time, to get them back to being a CL-qualifying team. After that maybe they will look for one of the up-and-coming bosses, like a Klopp or even a Conte.
Hopefully whoever takes over fails miserably, but with the spend United are likely to make it probably won't happen for two seasons running, and that also opens the door for Nani to leave.