The organization of the fight was reported by informed sources close to the situation.
Said Nurmagomedov, 30, won his fourth consecutive UFC win last December, finishing with a submission choke to Saidyokub Kakhramonov, while Jonathan Martinez, 28, is also on a four-fight streak, most recently against Cub Swanson.
Recall that the main event of the UFC Fight Night 221 tournament will be a potential bantamweight bout between Petr Yan and Merab Dvalishvili.