Id say these are the likely challengers
1. Evans (if he beats Nog and drops down)
2. Lombard (if he beats Okami)
3. Rockhold - although id say he needs a win in the UFC. Philippou or Belfort are the most likely fights to get him that shot.
Id also like to see Jacare in a big fight because I feel he is reasonabally close to the title shot. He should get Philippou/Belfort as well.
When Munoz is back id like to see him fight Bisping.
There are a lot of exciting fights left for Anderson, I hope he fights more frequently in 2013.