He'll be 'the missing link' until he gets destroyed in some match, then we'll be longing for Herrera, he'll come on, get destroyed, then it will be Fellaini who'll be missing, etc. The never ending circle of midfield failure. Remember when we've had Carrick and Herrera in midfield and we lacked 'some steel'? Now we've got some 'steel', some 'drive' from Pogba so we lack the 'controller'. So we'll drop either of those two, get controller, play 2-3 good games just to miss one of the former.
Of course the solution would be playing with 3 midfielders but I'd argue we've done that against Feyenoord, who have we lacked there? I'd say we've had the drive in Pogba, people said that Herrera can control the games so he was there too and then Schneiderlin, probably as something closest to the destroyed/steel thing. We've got steamrolled.