[1] In the 2018 WHL Bantam Draft, the Prince Albert Raiders selected Allan in the first round, third overall.
[6] This victory qualified the team for the 2023 Memorial Cup, where they reached the final, before being defeated by the Quebec Remparts.
[7] On October 8, 2024, Allan made his NHL debut with the Chicago Blackhawks in a 5–2 defeat to the Utah Hockey Club.
[8] He scored his first NHL goal on December 19, 2024, in a Blackhawks 3-1 victory at home against the Seattle Kraken.
[9] On December 12, 2022, Allan was named to Team Canada to compete at the 2023 World Junior Ice Hockey Championships.