I am not convinced that we are getting this guy. Assuming we let Zaza go, we would have Dybala, Pjaca, Higuain, Mandzukic, and Gabigol. Unless Allegri intends to play 3 of those up-front (which I doubt), then 1 or 2 of those players won't be getting many minutes.
I suspect he is a back up option if we don't get Higuain at the last minute and/or Pogba is sold and we have money to invest. Good to always hedge your bets.