The American and the Dagestani will cross gloves on Aug. 3 at a tournament in Abu Dhabi, UAE.
"I will be keeping an eye on this fight. We know that Umar has a tendency to take off before important fights. I will be surprised if this fight even happens. It wouldn't shock me if Corey beats him. Yeah, I have my doubts about Umar coming out for the fight. I don't think he's overrated, but I do think Corey is better as a fighter than Nurmagomedov," O'Malley was quoted as saying by Bloody Elbow.