One of three grad transfers entering the 2020-21 season, Donald Carey was a mainstay over his two seasons at Georgetown.

A 6-5 guard from Upper Marlboro, MD, Carey was signed by coach Jamion Christian to Mt. St. Mary's in 2017-18, averaging 9.0 points as a freshman, then followed Christian when he became Siena coach in 2018-19. While playing for the Saints, Carey averaged 11.3 points a game in 28 starts. Carey graduated Siena in three years and notified the school he would not be continuing as a graduate student, leading some to think he would reunite with Christian (now at George Washington), but GW had no open scholarships. He signed instead with Georgetown in July of 2020.

Carey started each of the first 12 games of the 2020-21 season, matching a season high of 19 points in consecutive games versus St. John's. Carey was averaging just under 10 points a game when he was replaced in the starting lineup by forward Chudier Bile, where he averaged 6.6 points per game over 18 minutes per game.

In 2021-22, Carey was named the first team captain in the Patrick Ewing era for the upcoming season, and lived up to the accolade: a starter in 31 games, he scored in double figures in 28 of them, shooting a team best 38.8 percent from three point range and 91 percent from the foul line. A 24 point effort at #10 Villanova was a career high. In a season of wild inconsistency, Carey was a dependable option at every turn, finishing second on the team in scoring and third in rebounding.

In April 2022, Carey announced he would pursue the NBA draft, but reversed course and announed a transfer to the University of Maryland.