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Flyers General Manager Paul Holmgren (L) did not comment Friday when asked about Chris Pronger's new contract.
The NHL will hire an outside firm to determine whether the Flyers talked about a timeline for Pronger's potential retirement before the seven-year, $34.45 million contract was signed.
The NHL apparently is concerned that the front-loaded contract for an older player like Pronger violates the spirit of the salary cap, according to Philly.com. Since teams know that players might retire instead of playing for a lower salary in later years, an extended deal allegedly lowers the average salary cap hit.
If Pronger -- who will turn 35 before the seven-year extension kicks in next summer -- retires, the Flyers would take an average cap hit of $5 million annually for the life of the contract, according to ESPN.
With his new contract, Pronger will be making $7.6, $7.6, $7.2 and $7 million in the first four years, $4 million in the fifth year and then $525,000 in each of the last two years -- or, a tad under $5 million annually.
Meanwhile, Pronger isn't the only player whose contract is under investigation. Marian Hossa's 12-year, $62.8 million contract with the Chicago Blackhawks is also being looked into.
The Blackhawks released a statement on Friday denying any violation of the CBA, ESPN reports.