Could he also consider going to a club with a slightly lesser status such as Chelsea to still play CL?
I guess, the best thing for cristiano Ronaldo to do now, is to resign to receive a beautiful honor from the world, and to look for a coaching job to raise more potential players that will make the world to celebrate him than looking for a club to join after the disgrace Manchester united coach gave to him by eliminated his contract. I don't think, Chelsea coach will allow someone that is above 28 age in their team, because cristiano Ronaldo is almost 38 age now, which it will be difficult for any team to accept such player in their team.
Unfortunately things like this will not do Ronaldo.
His ambition is still very big and we all know that so as long as his body is still able to play ball I think he will continue before the age of 40 years and even beyond.
He is one of those people who has never rethought about football, I think because it's not wrong to say he's a robot. so with his age now and still being able to compete and play in football I'm sure he won't take this option.