Umanmielen posted a report from On3 to his Instagram page that showed him in an LSU uniform.
Umanmielen decided to transfer after the Ole Miss season ended with a 31-27 loss to Miami in the College Football Playoff semifinals on Jan. 8. He had four tackles and a sack in the contest.
Umanmielen had 45 tackles (including 13 for loss), nine sacks and one interception in 15 games for the Rebels last season.
It was his lone season at Ole Miss after playing two seasons for Nebraska.
His older brother, Princely, was a rookie for the Carolina Panthers this season. He split his college career between Florida (2020-23) and Ole Miss (2024).
Umanmielen is the fourth Ole Miss player to follow Kiffin to LSU. The others are linebacker TJ Dottery, offensive lineman Devin Harper and receiver Winston Watkins Jr.
