According to Marshall's father, Dennis, the four finalists are Virginia, Villanova, Georgetown and North Carolina.
Marshall, a 6-foot-3, 170-pound sophomore point guard, visited North Carolina on the weekend of Sept. 1, at which point he received a scholarship offer from Roy Williams.
Marshall has also received scholarship offers from Wake Forest, Ohio State, Connecticut and Pittsburgh.
He is scheduled to attend UNC's "Late Night with Roy Williams" on Oct. 12.
Stay tuned to InsideCarolina.com for complete coverage of Marshall's decision.