UFC Fight Night 99 in Belfast, Northern Ireland is set for a big shake-up.According to a report by MMAFighting , Gunnar Nelson is out of his fight with Don Hyun Kim and will no longer compete at the event. In its place, a rematch between Uriah Hall and Gegard Mousasi will serve as the new main event for the Nov. 19 card.Mousasi is currently ranked No. 5 in the middleweight division, and many think the Dutchman is within striking distance of a shot at the UFC 185-pound title.Prior to Mousasi going on his current three-fight winning streak, Hall upset the odds and defeated him back at UFC Fight Night: Barnett vs Nelson. Despite having bounced back well since the defeat and overtaking Hall in the rankings, earlier this week, Mousasi confirmed he would love to get that loss back and get his revenge against The Ultimate Fighter alum.“I’m saying I want to fight Uriah Hall—rematch,” Mousasi said. “I don’t think they are going to give me that fight because it doesn’t make that much sense for the UFC. I want to shut those people up who have some comments.“I want to put something straight. I have nothing against Uriah Hall. He deserved it, he won the fight fair and square. I’ve got nothing against him, but I want my rematch and I want my chance to get it back and get even with him.”