Many people doubt that the Boston Celtics can compete this season because star forward Jayson Tatum will miss games due to an Achilles injury. However, head coach Joe Mazzulla isn’t paying attention to the noise.

“If I ever get to the point where I’m basing my motivation off the expectations of others and people I haven’t met before, I’ll retire. Quit,” Mazzulla said Monday, via WEEI’s Justin Turpin.

The Celtics aren’t just missing Tatum this season; they’ve also lost a handful of impactful players this summer.

Boston traded guard Jrue Holiday and forward Kristaps Porzingis, and allowed centers Al Horford and Luke Kornet to leave in free agency.

Although the Celtics are missing several of their top players, the roster still has enough talent to compete and win.

Boston has one of t

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