He made his CFL debut against the Ottawa Redblacks on October 11, 2014, recording three special teams tackles.
[3] After beginning the 2015 season on the injured list, Clarke started his first game in Week 3 against the Saskatchewan Roughriders following an injury to Ryan Phillips, where he recorded three tackles and a sack.
In October 2014, Clarke was one of ten named plaintiffs in a class action lawsuit against several major broadcasting companies and NCAA athletic conferences seeking compensation.
[13] In the lawsuit, the plaintiffs alleged that the images of college athletes in the Football Bowl Subdivision and men's basketball Division I were improperly used without permission.
[14] The case was dismissed by a judge in June 2015, who ruled that the players' claims were not strong enough to prove they were legally entitled to money from appearing in televised sporting events.