I would still think that Albert (Featherstone?), Ferres, Myler and Cuthbertson could all leave / retire if the right opportunity came up.
This would leave us with a leaner and meaner squad that is still a prop and hooker short plus has a reserve team filled with the exciting youngsters ready to step in when required.
That said, even if an experienced prop comes in, we would still look short of cover here, so maybe Cuthbertson goes around again if the 2 gaps can be filled by English players (I have no idea who though)