I don’t see Christiano Ronaldo switching sides to Chelsea. He’s a responsible player and knows what rivalry means. I am aware that Chelsea Owner met with Ronaldo's Agent to discuss about a possible transfer but it is not reliable. I think people might have thought that his frustration over Manchester United’s lack of activity in the transfer market while other top-six Premier League clubs have continued to bolster their squads is the reason why he wants to leave. Ronaldo is an important part of Erik Ten Hag's plan so there’s no point if he leaves. Chelsea will have to look elsewhere for a new striker to replace Lukaku as Lewandoski has only Barcelona on his mind at the moment.
I don't think Ronaldo will go to Chelsea and he doesn't want to be branded a traitor. If he wants to leave maybe Ronaldo will return to Serie A and Laliga. In the premier league manchester united is the home for him it would be impossible he will play in a club other than manchester united. indeed rumors circulating the new owner of chelsea has met with ronaldo agent but this meeting is not a big option ronaldo will go to chelsea even manchester united has firmly denied the news because manchester united does not want to sell ronaldo