If played deeper in a 4231, Pogba, to me, can become what Yaya Toure was for City in 13-14, where he racked up an incredible amount of goals and assists.
He has the passing range, the drive, the vision and the ability to score outside the box, which we've lacked since Scholes and the Rooney of old.
For this to happen, however, we'd need a very dynamic centre midfielder next to him - similar to Fernandinho, as Pogba isn't known for his hard work.
In Schneiderlin, despite arguably being better in the box to box role, I feel we have someone who could do that for us, but we'd need a ready replacement to rotate with him. Kante, Matic, Krychowiak, etc.
Schneiderlin/New CDM - Pogba/Herrera