As a
freshman at Purdue in 2018, Deen
redshirted. He then appeared in nine games in 2019, totaling eight tackles, and six games in 2020, making 12 tackles and a
sack while starting four games. In 2022, he appeared in 12 games, posting 28 tackles, four TFLs and 2.5 sacks while repeating as an honorable mention All-Big Ten selection. Deen entered the
NCAA transfer portal after the season, concluding his stint at Purdue having appeared in 32 games, making 73 tackles, 15.5 TFLs and 6.5 sacks. ==Professional career==