The Philadelphia Flyers' attempt to trade defenseman Tony DeAngelo back to the Carolina Hurricanes is being held up by a clause in the NHL collective bargaining agreement, an NHL source confirmed Monday.

The Flyers acquired the restricted free agent rights to DeAngelo, 27, from the Hurricanes on July 7, 2022, for three draft picks. Former Philadelphia general manager Chuck Fletcher signed him to a two-year, $10 million contract.