I do not think Madrid would pay the absurd sum required to purchase Neymar, however if he were to come, it would take both the team and the player to the next level. Neymar cannot reach greatness at PSG. Madrid could use Neymar, Vinicius could greatly grow under him as well.
And as for the chosen one, I do not feel he has the talent to couch a top tier team anymore, however he certainly would make things more unpredictable and amusing. I would much rather get Conte, or Klopp if possible.