Board Thread:Warhammer 40k General Discussion/@comment-24944355-20170413064743/@comment-24944355-20170414235841

The Lion is the most likely to be the next to return as Guilliman was the obvious choice to be the first & given the history between the two that combination would lead to plenty of drama. On the other hand after going the obvious route with Guilliman as the first to return GW may decide to be a bit more inventive with the next.

We know that Russ is imprisoned somewhere in the eye but finding him let alone rescuing him will take some serious work. Vulkan has been in hiding waiting for the Salamanders to find his treasures one of which - The Unbound Flame - is Vulkan himself, so he could turn up at anytime. Corax vanished after the scouring & given the hint at the end of the Corax compilation novel he has probably spent all this time hunting Chaos beasts, something he can do better than any, & could return at anytime & it's possible he will be the one to rescue Russ which could see both return at once.