Why did Pogba choose Manchester United when he could go to Real Madrid, Barcelona, Chelsea, PSG, Manchester City or stay in Juventus where he was the king with the team built around him?
Because Manchester United had to promise him something special like the assurance that he'll be the main man and undisputed star of the club for the next 10 years otherwise Pogba's choice makes absolutely no sense.
So it's impossible that Neymar comes, as it's impossible that Messi or Cristiano come. These 3 players are the only ones that have a more important brand than him.
And Neymar prefers Spain or Paris (beautiful city + many Brazilian players + ready to do anything...)