Green has bounced around since then, playing for eight different franchises, and spending two years playing in Russia. He re-established himself in the NBA in 2013-14 with the Suns, when he averaged 15.8 points and played in all 82 games. He spent last year with the Heat, averaging 8.9 points in 69 games.
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The move will continue to feed speculation that the Celtics are working on a trade to bring in another star-caliber player, after signing Al Horford early in free agency. The Celtics — who are sending first-rounders Guerschon Yabusele and Ante Zizic back to play internationally for another year — have 14 guaranteed contracts on their roster, once they sign No. 3 pick Jaylen Brown.
Sources around the league have said that Boston remains active in seeking to make a larger trade.
