BOSTON, MASSACHUSETTS - JUNE 17: Boston Celtics fans celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: Boston Celtics fans celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: A Boston Celtics fan climbs a tree to celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: Boston Celtics fans celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: Police officers stand near where Boston Celtics fans celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: Police officers enter the crowd while Boston Celtics fans celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: A Boston Celtics fan holds a shirt that reads "Kyrie Sucks" to celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)

BOSTON, MASSACHUSETTS - JUNE 17: A Boston Celtics fan climbs a tree to celebrate after their team won against the Dallas Mavericks 106-88 in Game Five of the NBA Finals on June 17, 2024 in Boston, Massachusetts. This is the Boston Celtics 18th banner. (Photo by Scott Eisen/Getty Images)