Wallace was taken by the Utah Jazz with the last pick of the 2016 NBA draft. In July 2016, he joined the Jazz for the 2016 NBA Summer League. On October 31, 2016, he was acquired by the Salt Lake City Stars, the Jazz's NBA Development League affiliate. He was waived on November 10 after suffering an injury. On November 14, he was reacquired by the Stars. On July 18, 2017, his right was reported to have renounced, allowing Wallace to sign with any NBA team.