The Timberwolves waived Trimble on Oct. 14.
Trimble led the Terps in scoring last season.
This is Jackson’s second honor in two days.
Jackson averaged 10.5 points and a team-high six rebounds per game last season.
The Terps finished third in the conference last season.
The Chicago Bulls waived Stone on Monday.
The Terps recorded just 85 yards on 31 carries against Northwestern.
Trimble averaged 16.8 points per game as a junior last season.
Brantley transferred to Massachusetts this summer after graduating.
The junior returned a kickoff 100 yards for a touchdown against Ohio State.