Honestly either way this works out pretty good for Eddie.
Even if he is forced to continue in Bellator, he will be making a SHITLOAD of money and fighting easier competition.
Bellator is also getting a lot more exposure now that they are paired up with Spike and Viacom.
Well the professional career of a MMA fighter is so short that these fighters want to make as much money as possible in that short career span. The PPV cut that Alvarez has in his UFC contract might get as high as 7~10 times of his base pay. Also, joining the UFC would mean much more exposure and that would mean more big money sponsors. Alvarez would make much more money in the UFC.