Celtics could be without key player vs. Bucks

BOSTON, MASSACHUSETTS - OCTOBER 30: Jalen Smith #25 of the Chicago Bulls and Mitchell Robinson #4 of the Boston Celtics battle for position during a free throw in the second half at the TD Garden on October 30, 2026 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Brian Fluharty/Getty Images) | Getty Images MILWAUKEE —