The 6-foot-5 Louisville native averaged 12.6 points, 5.8 rebounds and 3.2 assists in 19 games as a sophomore and was an All-Atlantic Coast Conference honorable mention. Johnson was the Cardinals' No. 2 scorer but made a team-high 32 3-pointers on nearly 39% shooting from behind the arc.
Shoulder surgery sidelined Johnson for nearly four months entering his freshman year, but he averaged 6.3 points over 27 contests and was one of Louisville's most effective players on both ends of the floor over the second half.
He thanked family, teammates, coaches and the city for their support in a statement posted to Twitter on Wednesday. Johnson added that it was his dream to play in the NBA "since I could remember, and now it's time to take the next step to get there."