The 6-foot-7 forward only spent one year in Las Vegas after transferring there in 2019 after two seasons at Utah. The NCAA granted him immediate eligibility last season, so he didn't have to sit out a year.
It's now unclear, however, if Tillman qualifies as a grad transfer, a status that would allow him to suit up immediately for the Aggies.
Tillman was the Pac-12's Sixth Man of the Year with Utah in 2018-19. He averaged 10.1 points in 25 games for UNLV this past season.