I agree with your assessment to a point, but it fails to take into account Henrikh Mkhitaryan. Now I've not watched any of their games in preseason (why would I?), but I would have thought that Henrikh would take the number 10 position leaving Pogba to play a similar role to the one he played for France at the Euros. Granted, he may get some game time at No.10 but I'd expect Pogba to play a more withdrawn role the majority of this season.
I could also be utterly and totally wrong!
Mikitargaryan will play as one of the 'wide' positions in the 3 behind the striker.