Green grew up in Humble, Texas and attended Atascocita High School.

[1] Green was rated a five-star recruit and originally committed to play college football at LSU during his sophomore year before decommitting as a junior and choosing to enroll at Texas A&M.

[6] As a sophomore, Green moved to left guard and started all nine of the Aggies games and was named a first-team All-American by Sporting News and the Football Writers Association of America and was a second-team selection by the Associated Press, the American Football Coaches Association, and the Walter Camp Foundation, tying him with BYU's Brady Christensen for a consensus All-American selection.

[18] Green decided to forgo his final year of eligibility to enter the 2022 NFL draft.

[25] On August 29, 2023, Green was placed on injured reserve after suffering a shoulder injury in the final preseason game.