Runnin' Rebel junior forward was two-time MW Defensive Player of the Year and finished second in the nation in blocks this season.
Rashad Vaughn and Cody Doolin have signed with UNLV during the first week of the spring period and will enroll at the school this summer.
Former Auburn, New Mexico and Memphis assistant joins Rice's coaching staff.
Runnin' Rebel junior forward was sixth in the nation in rebounding.
Deal would be for two additional years through the 2018-19 season.
Deville Smith led UNLV with 17 points, while Khem Birch had 15 rebounds.