UFC welterweight Carlos Condit needs a new opponent for his scheduled appearance on the UFC on Fox 29 card in Glendale, Ariz., on April 14.
The vacancy was created when Matt Brown suffered a torn ACL during training this week. MMAFighting.com first reported the news.
UFC officials will work to find a suitable opponent for Condit, who has lost three straight fights and four of his last five.
Condit, a former World Extreme Cagefighting champion and former UFC interim champ, contemplated retirement before returning from a 16-month hiatus to lose a unanimous decision to Neil Magny in December.
Brown, who also pulled out of a scheduled fight against Condit in 2013 due to injury, is coming off a first-round knockout of Diego Sanchez in November that snapped a three-fight losing streak.
UFC on Fox 29 will be headlined by a lightweight bout between Justin Gaethje and Dustin Poirier.