That situation arose before Harbaugh left for the Los Angeles Chargers in January. Mars estimated such a search would have taken weeks and $38,000 in legal fees.

Harbaugh is no longer compelled to cooperate with the NCAA in either Michigan case since he left for the Chargers. He could still suffer a show-cause penalty the first case that could hinder his return to college coaching. Harbaugh’s status is similar to that of Las Vegas Raiders coach Antonio Pierce.

Roberts has a distinguished legal and compliance background. His third term as infractions committee chair expires in August. He is a special advisor to USC president Carol Folt. He was the school’s interim AD when Lynn Swann resigned in 2019. He joined USC in 2010 as vice president of athletics compliance. In 2017, he was recognized with an award from the National Association for Athletics Compliance.

At one point, Mars pointed out what he said was a conflict of interest regarding Roberts. USC is joining the Big Ten on July 1. He did not receive a response.

Neither USC nor the NCAA immediately responded to requests for comment.

The letter to Mars was copied to Michigan AD Warde Manuel, Michigan president Santa Ono, Big Ten commissioner Tony Petitti and Kyle Skillman, the attorney from Bond, Schoeneck and King assisting Michigan in the investigation. The law firm is one of the industry leaders in guiding schools through NCAA inquiries.

Mars was at one time one of the NCAA’s star additions to the newly formed Independent Accountability Resolution Panel in 2019. Mars was on the Complex Case Unit within the IARP for 12 months before resigning. The IARP was disbanded earlier this year essentially for its inability to handle complex cases.