Green played basketball for Detroit Country Day School in Beverly Hills, Michigan.

[3] At La Lumiere, he played alongside teammates Isaiah Stewart, Keion Brooks Jr., Jaden Ivey, Jeremy Sochan and Kamari Lands.

[4] Green committed to playing college basketball for Eastern Kentucky over offers from DePaul, Rhode Island and TCU.

[5] On January 2, 2021, Green posted a freshman season-high 30 points and five rebounds for Eastern Kentucky in an 80–75 win against Austin Peay.

Following his junior season, Green elected to forgo the remainder of his college eligibility and enter the 2023 NBA draft.