Sophomore safety Thabo Mwaniki, who started Oklahoma State's first four games and hasn't played in its past three, will transfer, he announced on his Twitter account Sunday afternoon.
Mwaniki, a product of Denton Guyer High School in Texas, recorded 17 tackles, one for loss, this season. True freshman Jarrick Bernard began starting over him in the Cowboys' fifth game against Kansas.
OSU's only true freshman to start a season ago, Mwaniki started two games and posted 22 tackles during the season to earn the Russell Okung Award as the Cowboys' outstanding newcomer. Mwaniki committed to the Cowboys out of Denton Guyer over offers from several programs, including Big 12 schools TCU, Baylor and Kansas.