Honestly, considering he was absent for such a long time and things in the LW have changed a lot in that time, it's not that easy to pick an opponent for Sherk.
1. Kenny Florian - The first name that came to my mind. Would be a sweet rematch, but seing how poorly Florian has done against Maynard, and wrestlers in general, i don't know if this fight would be a good idea.
2. Clay Guida - always entertaining, he would bring the fight to Sherk. Sherk would still have the advantage when it comes to wrestling, but Guida can wrestle also
3.Charles Oliveira - the future LW Champion imo.
This kid is such a huge talent. Has shown big improvements in his standup game. I don't think he could match Sherk's wrestling, but who could?!
But Oliveira has such sick BJJ, i think he wouldn't mind going to the ground with Sherk. Dunham was so close to submitting Sherk, that i am alsomt 100% convinced Oliveira would do it.