Per KFFL: Sosa, Foster, T Brown and Billinsgly are strong candidates for the PS. While Hilliard is likely to join the Dolphins practice squad. Hot off the Wire - Fantasy Football News It sounds like players are clearing the waiver period.
I would also add Toribio if he doesn't get picked up off waivers (which I don't think he will). He didn't perform too terribly in the preseason, and the Trifecta really seemed to like his attitude, motor and fitness level. In a few years, he could be a serviceable backup, IMO.