Eubanks, who is currently playing a postgraduate season at Elev8 Prep in Delray Beach, Fla., signed to play with Alabama in the spring, but was not admitted to the school after failing to record qualifying test scores.
He initially signed to play with Baylor following his senior year at Our Savior New American School, but he was forced to attend prep school after complications with his transcripts.
Eubanks joins four other class of 2015 Aggies commitments: center Tyler Davis, shooting guard Admon Gilder, power forward D.J. Hogg and center Elijah Thomas. All four of those players are rated as four-star prospects by Rivals.
Eubanks will be eligible to join his teammates on the court against Baylor on Dec. 19, according to ESPN.com.