The timetable for a decision is uncertain.
Losing Cassell would be a blow to Maryland, which had counted him among a handful of players who comprise one of its best basketball recruiting classes in years. The class has the chance to make a swift impact on a Terps team that was depth-challenged and faded last season, finishing 17-15.
Cassell -- a creative scorer and the son of longtime NBA guard Sam Cassell -- enrolled in a fifth year of high school at Notre Dame Prep after earlier stints at Towson Catholic and St, Frances. The nature of the eligibility questions was not immediately clear.
InsideMDSports.com said the player is considering moving to a school that allows partial qualifiers. It said he could also attend junior college while remaining committed to Maryland.
Maryland athletics officials declined comment.
Maryland appeared thin in the backcourt after point guard Pe'Shon Howard injured his knee last season and leading scorer Terrell Stoglin was suspended and opted for the NBA draft. Coach Mark Turgeon said recently that Howard, who tore an anterior cruciate ligament, is progressing well.
Maryland is awaiting a decision from the NCAA on the eligibility of guard-forward Dez Wells. Wells was expelled from Xavier following a sexual assault allegation that a prosecutor said was unproven. Maryland is hoping Wells might be permitted to play immediately.