He played college basketball in the United States for Montana before debuting in the NBL for the Bullets in 2023.
[1] Between 2020 and 2023, Bannan played three seasons of college basketball in the United States for the Montana Grizzlies.
[3] On 6 April 2023, Bannan signed a three-year deal with the Brisbane Bullets of the National Basketball League (NBL).
[8][9] Bannan played for the Australia U17 national team at the 2018 FIBA Under-17 Basketball World Cup in Argentina.
[1] In February 2024, Bannan debuted for the Australian Boomers during the 2025 FIBA Asia Cup qualifiers, scoring 11 points against South Korea.