My guess is that it was almost exclusively the injury.
It's just plain bad decision-making if IT's public promotion of himself played a part in the decision to trade him. Do we punish guys for seeking what they're worth?
The time when your boss sends you to a firm that has a much better chance to pay you the longterm money you seek (IT's priority), and to a team with (nominally) better chances for winning the championship (ultimate professional goal) this year, it doesn't qualify as punishment to me.
Not a tear shed, for the millionaire's financial "problems", on my part. BTW the millionaire, who signed his previous contract at his full health, sanity and didn't have a gun pointed to his head during the signing ceremony. He deserves NONE of my sympathies in that regard, even though I am deceiving myself to be an empathic person in real life.
He was a good, a great Celtic, now I want to see the new guys that are actually Celtics.
Smart can also choose, ∼44/4y and be winning here for 10 years or getting bigger money somewhere in wastelands of the league.