#NBAFrontOffice: How do the Celtics go from good to great?

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In the latest installment of the #NBAFrontOffice series, Tom Penn (playing the role of general manager), P.J. Carlesimo (head coach), Amin Elhassan (scouting director) and Kevin Pelton (analytics director) discuss the Boston Celtics and whether a trade or free agency is their best chance at adding a superstar.

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Tom Penn: I think you always start with, "Do we have greatness, and if we don't have it, how are we going to get it?" So the first fundamental question is: Do we think that any players on the Celtics' roster qualify as pure, NBA-level greatness?