Tampa Bay waived Thompkins on Tuesday, Scott Smith of the team's official site reports.
Thompkins flashed in the preseason, and though he couldn't land a spot on the initial 53-man roster, he could be a candidate to resurface on the practice squad. The undrafted rookie was prolific in his only full season at Utah State, having racked up 102 receptions for 1,704 yards and 10 touchdowns in 14 games as a senior in 2021.