I've never really understood this
Like how his UFC contract can block him from fighting in another sport? If it blocks him from competing in Bellator or any other MMA promotion that would make sense cause it's the same sport, in boxing there are also exclusive contracts but I'd be surprised if the influence of these contracts would be expanded to other sports as well. Two sports are two different worlds with different ruled and etc... I would be surprised for example if Golovkin couldn't just fight an MMA fight if he wills so with his exclusive HBO boxing deal or if Crawford couldn't fight in the MMA if he would want so without involving his boxing promoter, Arum...
That shyt seems illogical to me