The organization of the fight was reported by informed sources close to the situation.
Khalil Rountree, 33, is riding a four-fight win streak, finishing Chris Dakas by first-round technical knockout in his last fight.
Azamat Murzakanov, 34, picked up his third win in the UFC in April, winning a unanimous decision over Dustin Jacoby.
Khalil Rountree and Azamat Murzakanov are currently ranked eleventh and twelfth in the UFC welterweight rankings, respectively.