Who's the most hated former Celtics player on social media right now? No, it's not one of the stars of their upcoming NBA Finals opponent, Kyrie "If you'll have me back..., quit on team, couldn't handle the boos afterwards so he stoked racial flames (after previously stating he had experienced racism in Boston, stomp on the Celtics mascot" Irving. No it's not any of the former Celtics players who defrauded the NBA's healthcare plan.
It's a starter from the 2008 champion Celtics. And it's no longer Ray Allen, who let's be honest deserved flack for after considering it disrespectful when Boston made him their 6th man and offered more than any other team (but less than what he was asking) left to join the Celtics' current biggest rival at the time who had just defeated the Celtics in 7 in the Eastern Conference Finals.