I think whatever happens, he's leaving Juventus soon. He's got more than enough money to take a pay cut at this point in his career if he wants to go to a team that can compete without breaking their entire wage structure for him (which no teams actually competing would at this point). Juventus want to get rid of his massive wages, so his transfer fee will be minimal (I'd be surprised if it's anything over 25-30m). The thing is, he's just not really needed at United IMO, he wouldn't fill a massive need, he's not a right winger, he's not a DM, he would essentially have to take Rashford or Cavani's position, it just seems like a publicity stunt than an actual valid transfer.