CHICAGO (AP) — Attorneys pushing for approval of a proposed $75 million settlement of a class-action lawsuit against the NCAA say claims the deal unfairly costs athletes affected by head injuries hundreds of millions of dollars are untrue.

Proponents of the plan say in federal court filings Friday in Chicago that former San Diego State football player Anthony Nichols’s assertions are “unfounded by any fact.”

Nichol’s opposition is part of what could be a months long approval process to raise questions about the deal that would involve the NCAA creating a $70 million fund to test thousands of current and former athletes for brain trauma. It also sets aside $5 million for research.

Nichols is among tens of thousands of male and female athletes who would be covered by the sweeping class-action deal.