It is more possible and easy for Ronaldo to go to Chelsea than for him to go to PSG, this is because they already had three big names that they are paying large amount of money in the person's of Messi Neymar and mbappe, adding Ronaldo to these three will cause very much and the FIFA financial rule might not encourage so. Ronaldo has big chances of going to Chelsea since rumor has It that it was one of the reasons that Thomas was sacked because he refused to get Ronaldo to the club against the wish of Todd
A tactic played by Neymar, Mbappe, Messi and Ronaldo at the same time has the potential to create too many defensive weaknesses. Such a transfer does not seem very wise in terms of Paris Saint-Germain FC's squad planning. If they transfer Ronaldo, it will be a financial burden and a mistake in terms of squad planning. Therefore, his transfer to Chelsea may be a more reasonable option for now... Regardless, Ronaldo will not stay at Manchester United. He burned all the ships, he can no longer return.
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.
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.
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.
My instincts tell me that Ronaldo is also ready for whatever consequences that will come with his actions including termination of contract with the club on the terms that he leaves with nothing. His bravery clearly shows he was fed up with everything and didn't mind falling out with the club on this account so I think it will be the end of the road for both parties, I read a statement that said Manchester united will come to conclusion on the decision to be taken on this matter in the coming week so let just wait and see the outcome.