This is an excellent deal, no two ways about it.
Where I can agree with Zach is that in reality, every offer for Pogba that will actually be offered will be shittier than this. And while it even might match his market value, we should never sell at his market value, only at an offer substantially above, which will never come.
Ergo, for all offers that actually will arrive, we should keep him. The only time we should sell him is if he wants to force a move.