He most recently won a Grey Cup championship with the Toronto Argonauts of the Canadian Football League (CFL).

Holley played college football for the Western Michigan Broncos from 2017 to 2021.

[5] At the conclusion of training camp in 2024, Holley accepted a practice roster position, but soon after made his CFL debut in the team's second game of the season on June 22, 2024, against the Edmonton Elks where he had one defensive tackle.

[7] He also played and started in all three post-season games, including the 111th Grey Cup where he didn't record a statistic, but shared in the Argonauts' 41–24 victory over the Winnipeg Blue Bombers.

[7][8] On January 13, 2025, Holley signed with the Cleveland Browns of the National Football League.