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Grant Williams reveals reason for leaving Boston Celtics for Dallas Mavericks

After spending his first four NBA seasons with the Boston Celtics, Grant Williams will be suiting up for a new team next year, as he joined the Dallas Mavericks as part of a sign-and-trade back on July 5.

Williams discussed what went into his decision to leave Boston, during his July 21 appearance on The Old Man and The Three podcast.

“I had a pretty good understanding from the start that I probably wasn’t [going back],” Williams said. “You know, like even just before free agency even happened — before Kristaps [Porzingis] and we made the trade — I was like ‘I probably won’t be back.