He was rated as a three-star recruit and committed to play college football for the Michigan State Spartans.

[3] In week 6 of the 2022 season, Brantley picked off C. J. Stroud and returned it 32 yards for a touchdown versus Ohio State.

[4] In the 2022 season, he started 11 games for the Spartans, where he totaled 48 tackles, a sack, six pass deflections, an interception, and a touchdown.

[5] During the 2023 season, Brantley played in just three games before suffering a season-ending injury, where he had ten tackles, and a pass deflection.

Brantley is the cousin of former Michigan State and NFL wide receiver, Herb Haygood.