The problem lies with Mousasi's inability to make middleweight. Mousasi recently vacated his middleweight belt to go to light-heavyweight, and later heavyweight.
"I cannot make the weight, otherwise I would have continued to fight at 185 and not given up my DREAM middleweight title," Mousasi told M-1 Global. "I cannot make 185 anymore and that is final."
In response to Belfort, Mousasi has challenged the former UFC light-heavyweight champion to a fight at a catchweight.
Mousasi on Tuesday extended his win streak to ten with a submission against Hunt in the opening round of the Super Hulk Tournament. Outweighed by 68.4 pounds, Mousasi took Hunt to the mat and snatched an arm for the kimura. Mousasi will face either Ikuhisa Minowa, Hong Man Choi or Sokoudjou after the Affliction.
Belfort has been very successful as a middleweight and wants to continue in the division. As a middleweight, Belfort won both of his Affliction fights with devastating knockouts over Terry Martin and Matt Lindland.