Representatives from Nate Robinson's camp are monitoring whether the Celtics impeded the guard's ability to earn a $1 million bonus.

They are considering filing a grievance, according to sources.

Robinson had played in 56 games this season and when the Celtics acquired him from the Knicks on 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.

Aaron Goodwin, Robinson's agent, facilitated the deal with the Celtics in hopes of getting his client that additional $1 million.