Gary Parrish

Renardo Sidney's attorney, Don Jackson, told CBSSports.com on Monday that the NCAA has informed him via email that he will no longer be permitted to participate in its interviews of third parties during the investigation of Sidney unless Jackson signs a confidentiality agreement.

According to Jackson, the email came Monday morning.

"This was an apparent response to the recent media coverage of the Sidney case and my direct criticism of the methods utilized in the investigation," Jackson said. He added that to date the NCAA and Eligibility Center have "failed to establish the existence of violations of any type."

As detailed in Friday's column here at CBSSports.com, Sidney signed with Mississippi State in June after USC opted not to accept his commitment because of presumed concerns about his amateur status. The perception of impropriety stems from how the Sidney family moved from a modest home in Mississippi to Los Angeles and, according to the L.A. Times , rented a house that cost between $4,000 and $5,000 per month.

The NCAA is, among other things, trying to determine how the family paid that rent.

In the meantime, Sidney's status remains unclear.