Hollywood Insider is reporting that Noah Bean, from Damages, and an unnamed actor from True Blood are to audition for the main role.
Bean looks almost exactly like Routh, IMHO and would be a perfect choice if this were a follow up to Returns but Brandon wasn't returning. As it's not, I wonder what the point in auditioning him would be - most casual viewers would probably think it's the same guy.
As for the True Blood actor ... hmmm. Ryan Kwanten? In great shape but too small and lithe - more of a Daredevil physique. Stephen Moyer? Probably too old. Alexander Skaarsgard? Well, dye his hair black and he's basically perfect. That would be a nice consolation for him after losing the Thor role.