I don't want him to stay in PSG, sadly too many things and agendas are far from good there, yet I guess it's the easiest and maybe wealthier way to stay tune and fit in his last years in Europe.
Going to another big club now might be too expensive for anyone and not that feasible in terms of long term projects, thought would be cool, yet the other more probably outcome might be the USA.
I really don't dig that transfer at all but it's understandable in a long term bizzness and long term Image and relevance of it in the future, it would be clearly a Pele's COSMOS alike move but quite a lot more profitable and relevant due to the period we are living and how soccer has gain terrain in the USA.
In any case nobody knows what would happen, kind of a rollercoaster with him in these last years, but PSG has become quite a toxic team since some time now, his family seems settle and enjoying Paris, that will have quite a some weight in the decision too.