Having Ronaldo in a team that is playing in the Champions League is something I really like. I honestly don't want to lose Ronaldo early in the top leagues right now, I don't want to see him in MLS or any team not competing in Europe. So maybe it will be good to see him at Chelsea if an offer comes in for him.
Chelsea would be better off with Ronaldo but even if that were to happen I believe his contract would not be for long. Chelsea need a quality striker where he can score more goals, and Ronaldo may still be able to take on the role of an experienced striker.
Cristiano Ronaldo seems still in the top level with in Champion League at the second half season and waiting for which one club interested want to sign him, Chelsea and Napoli are the Champion League team have rumor want to get his service but after World Cup over both team not any confirming yet. Champion League seems not excited without have Cristiano Ronaldo and Lionel Messi haven't his rival in this season.
Window transfer will open few weeks later and I think reach personal agreement is the best way before have any compete team want to sign Ronaldo, better for Chelsea if want to sign Ronaldo have reach personal agreement and talk about salary receiving, I believe Ronaldo will agree for salary cut off if can play in Champion League.