Pogba need someone else to make him tick is a myth, what Pogba as every attack minded player needs is a good set up. He isn't the one to keep tracking the runners from midfield, he is the one who can pick the passes from deep or in final third. With how static our players are, no wonder he can't pick a pass. It was obvious from watching games. He picks up the ball, look up, when there is no movement he make gestures to make runs and then either just make simple pass or try to do fancy trick and lose possession. Obviously he can just keep it simple everytime when no player is making runs but that's just a waste of talent. He isn't the player to keep it simple, term caf are obsessed with.
Also like you said, he is playing with a CM who can't move or defend, a CM whose sole purpose is winning headers and a striker who can't hold the ball.
His performance was a disgrace vs Sputhampton, he just gave up and didn't even bother to try which was very disappointing. But in general Jose is the worst thing that could have happen to Pogba.