[3] In his fifth and final season at Guelph in 2021, Allen totaled 58 tackles, three sacks and two forced fumbles in seven games, earning All-Canadian and Ontario University Athletics (OUA) All-Star honors.

He was also named the OUA's most outstanding stand-up defensive player.

[2] He dressed in all 18 games for the second consecutive season, starting two, in 2024, totaling seven defensive tackles, 22 special teams tackles, and one interception that he returned 48 yards for a touchdown.

[2] His 22 special teams tackles tied for the league lead that year.

[9] Allen had a workout with the Denver Broncos of the National Football League in December 2024.