The final approval of a $75 million concussion settlement with the National Collegiate Athletic Association is on hold until an independent auditor completes its review of a notice program that has apparently been plagued with problems.

The notice issues have delayed final approval of the settlement for a year. Last month, lawyers on both sides asked a federal judge in Chicago for approval to bring in an independent auditor to review the notice program. That report was due this month, with the next status hearing set for Sept. 12.