It’s a few minutes into a conversation about Tom Thibodeau being let go by the New York Knicks. The different sides to the matter are being discussed — and you should know that, among NBA types, there IS more than one side to the issue. Suddenly, the front office source on the other end of the line changes course. In so doing, he makes this a story about the Boston Celtics’ future, not the Knicks’ past. “You do realize that if Porzingis is heathy, we’re not having this conversation, right?” he says. “The Celtics win that series, Thibodeau gets fired and almost nobody gives it a second thought. It had been set up that he needed to get that team this far or that far, or his job could be in question. Then they get to the conference finals and they still let him go. What does that tell you?”