Among them are star wings Jayson Tatum and Jaylen Brown, as well as starting point guard Kemba Walker.
Walker is the latest addition to the list with an illness not related to COVID-19, which is what kept Brown out of the win over the Golden State Warriors on Saturday. Both Brown and Walker are listed as questionable to face the Bulls.
As anticipated, Evan Fournier and Robert Williams remain out. Celtics coach Brad Stevens provided positive updates on both players Saturday.