I wouldn't be surprised to see his people call out someone like Ruslan Chagaev, but with the way they've been selecting opponents, there really is no way of knowing.
Chagaev doesn't fit the package... He's 32, only beaten once and doesn't have an early KO loss on his resume.
Well Nikolay Valuev had never been KO'd and was only officially beaten once.. Of course he was something like 36 and not 32..