The Michigan football program is under NCAA investigation for numerous potential rules violations, including head coach Jim Harbaugh directly for failing to cooperate with investigators, a Level I violation, sources told Yahoo Sports.

The NCAA has prepared a draft of a notice of allegations, which once delivered to the school, will start a 90-day window on the case before the official notice is given.

The program is also being investigated for four Level II violations, which are generally considered minor.

They center on using too many coaches at practice sessions, meeting with two recruits during a COVID-19 dead period and watching player workouts over a video feed, according to a source.

The Level I allegation is that Harbaugh misled NCAA investigators when confronted with questions about the Level II allegations. A Level I violation could lead to significant recruiting restrictions or even a suspension for a number of games.