Time for a new challenge
Ronaldo has been struggling under Benitez, this was inevitable and people had predicted something like this happening for the Portuguese. While he would be a player that almost every club in the world would want, he needs to be at a place where he has a chance of winning trophies.
PSG seems to be a great option at the moment but having the Zlatan and Ronaldo in the same team could well lead the fireworks within the team, there only can be one place, Manchester United, his home which can be his home until he retires.
United have wanted someone big to join the club for a long time and Ronaldo moving back and helping Manchester United win a few more trophies soon could well be the fairy-tale ending everyone wants.