Bill Chisholm officially took control of the Celtics after buying a 51 percent stake in the franchise at a reported $6.1 billion valuation, which reshaped leadership and financial strategy. Since the deal closed, the ownership group moved quickly to reset the payroll and luxury tax situation by shedding nearly $300 million in salary and repeater taxes to get under the league’s second apron.

Chisholm has framed his ownership with a clear mandate around winning and culture. Saying “We’re not playing for second; we’re playing for championships and banners” to The Globe . The front office also left room to back coach Joe Mazzulla by extending his contract while reshaping the roster by moving high salary veterans like Jrue Holiday and Kristaps Porzingis. The situation became more complex

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