I am pretty sure Pogba won't start. It will not be wise to use the Inter game to disrupt a proven MVP midfield combination.
Having said that, I am pretty sure if Vidal or Marchisio gets tired or fail to impose on Inter at any point of time during the game, Pogba will definitely come on.
Some review about Pogba so far this season:
With his strength and height, it is really hard for opponents to get the ball off him as he just bulldozes his way past them.
He also has very good techniques in both winning and keeping the ball, and he does that with so much calmness it is hard to believe he is 19 yo