Bloodraven mentions that a raven or any animal that has been previously warged can be warged by another.
Last we saw, Varamyr’s pack was with Summer, including One-Eye who Varamyr warged into before he died.
Bran warging Hodor come back to bite him, since the same rule could apply. Should enough of Varamyr remain in One-Eye, could he theoretically warg from One-Eye into Hodor? He would likely want a large, strong body like Hodor’s.
Pretty sure Varamyr’s stuck in the wolf body.