There seem to be three issues with Fedor and the UFC:
1. UFC exclusivity - Fedor wants to fight in Russia as well. I don't know where I stand on this one.
2. Fedor wants to compete in combat sambo, the UFC is affaid he gets hurt. Which is ridiculous, because they let other people compete in ADCC. Okay, in combat sambo you might get hit in the head, but with Fedor it's not very likely. The only time I've seen him get hit in sambo, it was by his "kid" brother Aleksander.
3. Fedor's managers want to bring in more Red Devil fighters into the UFC. I think that's a stupid demand, although I wouldn't mind seeing Roman Zentsov in the UFC. He could be a monster with elbows.
It would a bloody shame if Fedor is not coming to the UFC. A very big missed oppurtunity if this does not happen and I hope very much they can renegotiate.