Its kind of a grey area with tank. He does not have the best record, but back in the early ufc days he was hard to handle. He was a two time tourney finalist and gave both eventual champs a pretty hard time. It would be a pretty tough decision on whether or not to let him in imo.
Q: He(Wanderlei Silva) said he's really looking forward to fight you in the finals.
A: (Mirko CroCop) Thats his problem.