Prior, a half back, is the son of former Essendon and West Coast footballer Michael Prior.[2] He played his junior football with Sorrento-Duncraig and was recruited out of West Perth, having been named in the 2019 WAFL Colts team of the year.[3]
Selected by Brisbane with the 59th pick of the 2019 national draft, Prior made 18 appearances in his debut season in 2021. His 12 games in 2022 included the Lions' two-point elimination final win over Richmond. He was re-signed at the end of the 2022 season for another two years.[4]
Prior was delisted by the Lions at the end of the 2024 AFL season, but was later signed as a rookie by Essendon during the supplemental selection period.[5][6]