On one hand he'd be wonderful to have in a midfield 3 with Pogba and Matic/Herrera for "easy" games where we're expected to dominate and break the other team down...but on the other, where would you play him for the away game at PSG? Or against Liverpool? Surely you couldn't start with him, because his presence would have to involve a compromised Pogba role, and Pogba is a better player. You can't spend 100+ million on a player that spends half the time on the bench. Ideally sure, you'd have him as an option (in the same way we had Rooney, Tevez, Ronaldo and Berbatov as options), but no big team would spend that money for a bit part player. Overrated for sure. Great player for sure.