The NFL Players Association has filed a grievance against the New England Patriots on behalf of Aaron Hernandez a league source told ESPN NFL Insider Adam Schefter.

The NFLPA is seeking to collect $82000 in workout bonuses from Hernandez's contract the source said. The tight end's deal was terminated by the team after he was arrested on murder charges.

A team can recover bonus money and avoid a cap hit if a player violates one of the league's personal-conduct policies or defaults on contract language.

Hernandez signed a five-year extension in August 2012 that was to keep him with the Pats through 2018. The extension had a total maximum value of $40 million with a $12.5 million signing bonus.