I don't think Fedor will sign with anyone. His camp thinks he deserves millions, but only UFC can afford him. Dana will low ball him, since he holds all the cards, and it will just be like before.
How can it be low balling if it's the highest offer in the marketplace?
If anything, the only parties that you could argue are low balling Fedor are WSOF, ONE FC, and Bellator/Coker. And now that I think about it, if the UFC's offer is significantly larger than everyone else's, then you could argue that the UFC is offering to over pay Fedor given the actual market demand for his services.
If you're going to prosper in a capitalist society it might be useful to actually understand how the free market works.