Really doubt he'll fight jds very soon. Cormier isn't a very smart fight for him either due to Cormier not being as well known. I'd bet if Cain loses his rematch, Cormier will probably get a shot right after Overeem, if he doesn't skip Overeem too.
I'd say give werdum, Gonzaga, Struve, maybe a rematch with Bigfoot. After that, I'd say Carwin if he beats Nelson (which I think he will)