Dunk would jump at the chance to sign for Chelsea, of course he would. More likely though is something like Stones / Shawcross / Reid to Chelsea, then Dunk to Everton / Stoke / West Ham.
My point was not that he wouldn't sign for them but that Chelsea wouldn't want him - they'll set their sights higher than that. They could want him for back-up - as someone for League Cup matches say - but Brighton would want at least £8m for him and that's a lot for a fringe player. Can't see West Ham going for them either, they'll set their sights a bit higher too.
Stoke's a possibility although I think Palace would definitely be a suitor.