The move reunites Butts with Mickie DeMoss, who recently took the Lady Kat head coaching job after 18 years as Pat Summitt's top aide at Tennessee.
Butts, 25, was an assistant last season at Michigan State. Prior to that, she spent two years on staff at Tennessee Tech, helping the Golden Eaglettes capture back-to-back Ohio Valley Conference regular-season titles.
Signed out of Americus, Ga., Butts was a four-year letterman at UT. She played for national title teams in 1997 and 1998, and was a three-time Academic All-SEC selection.