Yeah I actually agree with you, I don't see Ronaldo playing in Chelsea or any other EPL teams, he is a player that has high potential and love for Manchester United, so moving to their rivals club which is Chelsea won't be possible, if ask, instead of opening talk with Ronaldo, the blues should either go for lewandowski. Lewandowski is recently opened for any top European clubs, though barca are seriously considering bringing him to the club, but with the recent financial challenges they are having, I don't think they can bring in lewandowski to the club due to his price tags. So Chelsea might be lucky if they go for him, cause what is keeping him at Bayern Munich is his price and he also need a club that can Meetup with his salary.
Chelsea could overtake Barcelona if they wanted, because one of their obstacles in signing Lewandowski apart from Bayern Munich was holding back the striker a bit as well because Barcelona could not offer a higher price to Bayern Munich. Of course the opportunity is wide open for Chelsea to talk Lewandowski in order to join them. But so far there has been no serious statement from Chelsea.