Born in Penrith, New South Wales, Priest played his junior rugby league for Brothers Penrith, before being signed by the Mount Pritchard Mounties.

In 2014, Priest joined the Mount Pritchard Mounties in the New South Wales Cup, while training with NRL side Canberra Raiders during the pre-season.

[3] After impressing for the Mounties, Priest was handed a second-tier contract with the Raiders[4] and made his NRL debut for them against the Wests Tigers in round 8 of the 2016 NRL season.

[8] Priest played 17 NRL matches for the Raiders during the 2017 season.

[10] On 27 August, Priest was one of the players announced by Canterbury to be leaving at the end of the season after his contract was not renewed by the club.