Age have nothing to do with Ronaldo , he is still very active . The reason why maybe much clubs are not interested in buying him is because of the high amount of money to sign in him. This season Ronaldo have not played football in a full match compare to last season that is why he has not done much.
Ronaldo said he was going to retire at the age of 40 that was from his past interview with Piers Morgan. He is the most ambitious footballer ever in history of football. He has said he will love to play with his son in professional football. And also, he has a lot of records to protect due to the activeness of Lionel Messi. He thinks he still has a lot of years left in professional football. I do not see him going to Saudi Arabia. And I am very sure he will sign for a top team in Europe. Possibly, Napoli.
He doesn't need accept the proposal if he wanna still play at the professional competition like EPL. He has a very big ambition even he may reject the big offer that already made by al nassr. Ronaldo cares with his career rather than money. He puts football as a part of his life and so he has no choice other than wanna still play in the big league. Napoli already rejected him. it seems like mendez was trying to offer him to the EPL club again as ronaldo stated he becomes interested with one of big club in EPL and that's probably chelsea at this moment.
I think that ronaldo doesn't wanna leave from the big league.