"Representatives of Nate Robinson are monitoring whether the Celtics impeded the guard's chances of earning a $1 million bonus and are considering filing a grievance, according to NBA sources.

Robinson played in 56 games this season and when the Celtics acquired him from the Knicks Feb. 18, he needed to play in Boston's remaining 28 games to earn the bonus. Robinson played in 21 straight games before being benched April 4 against Cleveland. He then missed the April 7 game against Toronto, and played a combined 55 minutes in Boston's final four games.

Robinson's agent, Aaron Goodwin, facilitated the deal with the Celtics in hopes of getting his client that additional $1 million. Now his representatives are attempting to determine whether the $1 million the Celtics saved prevented them from exceeding the NBA luxury tax, which would cost the team $2 million for surpassing $71 million in player salaries."