Will they boo or will they cheer?
It remains to be seen what kind of reaction Ray Allen will get when he steps on to the court in a Miami Heat uniform at TD Garden on Sunday afternoon.
Both the Celtics and Allen are bracing themselves for a hero's welcome, a villain's return or anything in between.
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"I hope Ray is treated like a king in his return," said Doc Rivers. "We shouldn't focus on why he left or where he went. We should embrace and celebrate what he did for us when he was a Celtic. And was a great Celtics."