Barnett signed a letter of intent with the University of Toledo to play football,[1] however he never appeared in a single game for the Rockets.
In 2013, the Commandos folded, and Barnett followed head coach Billy Back to the Texas Revolution of the Indoor Football League (IFL).
[3] In 2014, Barnett once again followed head coach Billy Back, this time to the Nashville Venom of the Professional Indoor Football League (PIFL).
[5] On March 20, 2015, Barnett was assigned to the Tampa Bay Storm of the Arena Football League (AFL).
[7] On January 14, 2022, Barnett signed with the San Antonio Gunslingers of the National Arena League (NAL).