Here's his story from wiki:
Morant was not ranked by recruiting services ESPN, 247Sports, or Rivals. His only high major NCAA Division I offer came from South Carolina. Morant was also planned to be recruited by USC, though he had already made his own decision by then. He was accidentally discovered by mid-major program Murray State of the Ohio Valley Conference (OVC) in July 2016, when assistant coach James Kane attended a camp hoping to see a player who was joining his team. While looking for a snack, Kane noticed Morant playing a three-on-three game in an auxiliary gym; impressed, he contacted head coach Matt McMahon, who soon offered Morant a scholarship. On September 3, 2016, Morant committed to playing for Murray State during dinner at McMahon's house. His father said, "Every parent wants their child to play at a big time program, but what I realized is, don’t go where you want to be, go to where they want you." His other Division I offers included Duquesne, Maryland Eastern Shore, South Carolina State, and Wofford.