The Celtics are declining the 2026-27 team option on Williams' contract Monday, per Adam Himmelsbach of The Boston Globe.
Williams was more of a factor for the G League's Maine Celtics last season, though Himmelsbach notes that the big man could still land another opportunity with Boston. The 2025 second-rounder could participate in the Summer League with the Celtics before searching for a new NBA deal.