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This will be our first real chance to see what kind of player Green is.
Green has played 26 games for the Celtics but he still feels like a new free agent thanks to his missing all of last season following heart surgery.
Because of the long layoff and the fact that he didn't exactly set the world on fire in his brief time in Boston, it would be easy to look at Green with a sort of glass half full perspective. He's healthy, he's getting a full training camp to bond with his teammates and learn to fit into the Celtics' system properly.
He's still very young (26) and was once the fifth overall pick in the draft so there's bound to be oodles of talent there.
But we haven't seen it. Nor have we seen him display the ability to fit into a role. Green was the third option at best when he was with the Thunder. On the Celtics, he's liable to be the fifth or sixth.
His upside is there. Green's size should make him a brutal matchup at the 3, especially on defense. But if he has to go inside, despite being 6'9", he's immediately at a disadvantage. He's not strong enough to handle being posted up and while it could be seen as an advantage that he's quick enough to take bigger, slower 4's out to the perimeter, he's not a good enough shooter from long range for it to matter all that much.
The Celtics must see something in Green they love. They are the team that drafted him No. 5 back in 2007. They traded a hugely valuable, beloved piece in Kendrick Perkins to get him back in 2011. And they gave him a four-year, $36 million deal even though he hasn't played in over a year and wasn't impressive when he last did.
It's all up to Green now.