In college, he played basketball with the Charlotte 49ers as a freshman in the 2012–13 season. Then, he transferred to USC and played two seasons, 2014–15 and 2015–16, and transferred again as a senior to Grand Canyon Antelopes men's basketball and played for them in the 2016–17 season.[2] When he was in USC, he used to hang out a lot with the USC football team and said he began to miss it, he said "I began thinking about football all the time, and then I began having dreams, where I was playing football very vividly". Before he went to Grand Canyon, he seriously considered joining the USC football team, but had shoulder surgery so he played his last season at Grand Canyon.[3]
On January 6, 2020, Clark signed a reserve/future contract with the Chicago Bears.[5] He was waived/injured by the team on August 25, 2020, with a shoulder injury,[6] and subsequently reverted to the team's injured reserve list the next day.[7] He was waived on June 13, 2021.[8]