It'd be a shame if he has given up on Oleg, that would have been a great fight for him to retire on. Out of those 3 I think the best option for him is Roy Jones. I think Calzaghe beats him as long as he doesnt break his hand during the fight and after stepping up 2 divisions to light heavy and having prepared for another step up to heavy weight I dont think moving back to middleweight is a good idea (and surely Winky wouldnt take the fight above middle). So that just leaves Jones - a bit past it but still a big name and a win that Hopkins would still get a lot of respect for.