Questionable stipulations in rookie contracts may lead the NFL Players Association to take action against the league.

After the NFLPA found language in around 160 first-year player deals that it believes to be in violation of the collective bargaining agreement, the union is considering filing grievances to have those contracts voided, according to ESPN’s Darren Rovell.

“The union has undergone a comprehensive review of rookie contracts and language in those contracts for this year,” NFLPA spokesman George Atallah explained Wednesday. “The CBA explicitly prohibits players from some of the language that we have seen the clubs attempt to impose in these deals. We are considering all of our options to protect the players and enforce the CBA.”

Among the stipulations reportedly at issue are: clauses that require more than the CBA-mandated maximum of two offseason physicals; “automatic repayment” to teams for fines, services, and tickets; and an obligation for players to get permission from their current teams before communicating with other teams during the legal tampering period ahead of free agency.

According to NFLPA estimates, 25 or 26 teams have used language that violates the CBA in rookie contracts this year.

The union has informed the NFL management council of the contract terms it has deemed to be in violation of the agreement, according to Rovell.

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