I really don´t know, he has lots of followers and people seems to trust him but if something was learned of the stupid pep-sarri saga is that no-one is reliable.
I think he will choose money in the end..
Also there is this thing that Sarri asked for midfield and attack rather than defense which means push for Pogba SMS Chiesa and the likes while De Ligt seems more unlikely..
And of course there is that Juve didnt give up which suggests PSG are favorable in the race..