It seems to me that Pogba's hype, reputation, glory went down since moving to union because of their results and the way they play, regardless of uefa final. That would happen to James too if they don't change coach and transfer strategy...and they won't.
Serie A is much more technical and tactical than PL and James would do much better here. Cuad is here and he can tell him how he was resurrected after failing in PL. At first sight union would look more glory-offering but when you draw the line, we're way above them.