Gollant made his league debut in the final home and away round of the 2021 AFL season. In the first Showdown of 2022, Gollant kicked a career best four goals in Adelaide's after-the-siren win over Port Adelaide.[3]
For the second consecutive year, Gollant was Adelaide's leading goalkicker in the SANFL in 2024. His season included an eight-goal game against West Adelaide, for which he was awarded with the Neil Kerley Trophy, given to the player best on ground in that fixture.[4] Gollant's performance was rewarded with a promotion to the AFL squad in round 23, replacing the injured Taylor Walker.[5]
Despite good SANFL form, an inability to produce form at senior level resulted in Gollant being delisted by Adelaide following the 2024 season.[6] He signed for Williamstown in the Victorian Football League (VFL) following his delisting.[7]