[4] In October 2017, Magnay left the Tulsa Golden Hurricane program and signed a three-year deal with his hometown team, the Brisbane Bullets.

[8] Magnay had a breakout year during the 2019–20 NBL season that saw him enter the Bullets' starting line-up and receive attention from National Basketball Association (NBA) scouts.

[14] He made his NBA debut on 23 March 2021 against the Los Angeles Lakers, going scoreless over the final three minutes of the game.

[18] On 12 July 2021, Magnay signed a one-year deal with the Tasmania JackJumpers, a new club entering the NBL for the first time in 2021–22.

[20] Following the 2022–23 NBL season, Magnay moved to Spain to play for Obradoiro CAB of the Liga ACB.

[21] A foot injury suffered in Spain forced Magnay to miss the start of the 2023–24 NBL season.