At the moment it feels like the world's our oyster, but of the candidates that seem at least a little bit gettable, I think I'd be pleased with Martinez, Lambert, or Di Matteo. And there's a bunch of those foreign, non-premier-league-experienced types out there, too, although of course that would be mental.
I personally don't think there is any chance at all of the likes of Villas Boas, Moyes, Benitez.