Join Date: Dec 2011
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I think greed is definitely a major factor, Arum isn't known for his willingness to co-promote with anyone as it means he has to split the purse.
But the reason I believe he particularly dislikes GB is because Oscar ditched him, causing him to miss out on a lot of potential revenue.
If Floyd gets Mayweather Promotions off the ground when he retires I suspect Arum won't do business with them for the same reason.