Although having no inside knowledge myself, this certainly seems a sensible summary from what has been reported.
I do think, however - and to reiterate an earlier point made in this thread - the manner in which this saga appears to have slowed down since Real "pulled out" of pursuing him this window is worryingly telling from a Utd perspective.
It's also probably worth bearing in mind that despite Juventus being brutal with the transfers of big named players in the past, from those that you mentioned, these largely occurred when the Italian was the biggest and richest league going. Juventus were practically guaranteed like-for-like replacements. What's more, it is far more common in Serie A for big superstars to transfer between the top clubs, at least it was when Serie A was a dominant force. With neither of these being the case now, when it comes to Pogba, I'm not sure how much we can gather from looking at Juve's history of selling their top players.