Who is spongs' debut opponent?

I'm curious, hes been training with the blackzillians. Honestly I think he'll be in the UFC after 2 or 3 fights.

Source: http://ninjashoes.net/forum/showthread.php?79250-Who-is-spongs-debut-opponent&goto=newpost

Andrei Arlovski  Ricardo Arona  Noboru Asahi Marcus Aurelio  Mikhail Avetisyan