Edmonton Elks Brown was signed to the practice roster of the
Edmonton Elks of the
Canadian Football League (CFL) on June 4, 2023. He was promoted to the active roster on July 12, placed on injured reserve on August 16, and activated on September 14, 2023. His eight sacks were tied for the most in the league.
Arizona Cardinals Brown signed a futures deal with the
Arizona Cardinals on January 13, 2025. In March 2025, he participated in the CFL mentorship program, which is a "joint venture between the [CFL] and
CFL Players’ Association that provides a behind-the-scenes look at the business of the game and potential opportunities after football." He was waived on August 26 as part of final roster cuts and re-signed to the practice squad the next day. Brown was released on September 17 before being re-signed to the practice squad on September 23. He signed a reserve/future contract on January 5, 2026. ==References==