[4] During his senior year in 2020, he served as the offensive team captain in five games.
[6][7] On May 14, 2021, the Houston Texans signed McCollum as an undrafted college free agent.
[4] On October 6, 2021, the Detroit Lions signed McCollum off the Texans' practice squad.
[11] On August 16, 2022, the Pittsburgh Steelers claimed McCollum off waivers from Detroit.
[19] On September 15, 2018, McCollum was arrested for reckless driving and evading a campus police officer; however, all of the charges were eventually dropped.