Celtics TRADING for Kristaps Porzingis?
Spurs waive veteran forward Reggie Bullock
Mavericks land forward Grant Williams from Celtics in three-team sign-and-trade
Grade the Trade: Spurs get rotation depth to help facilitate Grant Williams deal
Grant Williams 'headed to Mavericks on a four-year $54 million deal, after Celtics three-team trade
RUMOR: Mavs targeting Grant Williams sign-and-trade with Celtics
Celtics Trade Grant Williams to Mavericks in Three-Way Deal - Blazer's Edge
Report: Celtics' Grant Williams drawing interest from three teams – NBC Sports Boston
Grant Williams going to Mavs from Celtics in a 3-team trade that includes Spurs, AP source says