It is clear, Ronaldo will not stay at Old Trafford with his statements attacking the club and the many names he has involved. after all, Manchester United are trying to end Ronaldo's contract without severance pay. and I'm sure, this is what Ronaldo really wants to leave Old Trafford. the hottest issue at the moment, only the Chelsea boss wants Ronaldo.
after ronaldo criticized manchester united and criticized the coach Erik Ten Hag, there is a great uneasiness between ronaldo and the club, and i think that terminating the contract with ronaldo is the best way because there is no chance for cristiano ronaldo playing at manchester united with this climate of war and fights, the manager of manchester united seems to have problems with ronaldo since he arrived at manchester united because Erik Ten Hag when he arrived at manchester united he did not put ronaldo to play 90 minutes, always put ronaldo to play a few minutes, only in europa league games and under pressure from fans and that he put ronaldo to play 90 minutes in europa league games. but ronaldo's situation is still not good because only chelsea's owner wants him, but in chelsea chelsea's coach doesn't want him which could also result in chelse's discomfort if he goes there
as for, with PSG. it seems very unlikely that this will happen. as you said, PSG already has the MNM Trio.
even if the scenario were PSG were interested in signing Ronaldo, he would not be willing because he would not be playing as a regular player. So IMO, it's unrealistic.
PSG don't need a striker, they've already spent a lot of money and they have good strikers, PSG just need to improve in defense, they're doing very well in attack and I doubt they'll want cristiano ronaldo and even if they wanted it it wouldn't bring an advantage to cristiano ronaldo, because as you said, cristiano ronaldo going to PSG would have to stay on the bench, it makes no sense to go to PSG
As for other rumors, Ronaldo is reported to have offered himself to Real Madrid. Spanish media claim Ronaldo wants to return to the Spanish giants as a replacement for the injured Karim Benzema. I'm sure, Ronaldo issue will be hotter. Moreover, if after Manchester United managed to terminate the contract with Ronaldo.
I read about this rumor and apparently it would be a 6-month contract, ronaldo would be of great help at real madrid, but at real madrid they hardly accept bringing back the same player who already played before in the team, that's why i doubt ronaldo will come back playing in real madrid, when manchester united manage to terminate the contract with ronaldo we will find out about his future club