Danny Ainge included a rebounding incentive in Jeff Green’s four-year, $36 million contract extension.

"That one area was our biggest concern," Ainge said. "To me, it's not a lack of effort. It's about bad habits.

"I don't think Jeff has ever focused on rebounding in his life, from what I can tell."

Green acknowledged he's aware of the rebounding incentive, though he indicated he hasn't given it much thought since the season began.

"Money comes, and money goes," Green said. "I just want to win games. I could care less how much money is riding on a rebound. It's contrary to who I am. You do that and you're thinking about the wrong things. It's just not my mindset."

Green is pulling in just 7.9 percent of all available rebounds while he’s on the court.