The Celtics' locker room was reportedly dysfunctional throughout the 2020-21 NBA season for a myriad of reasons stemming from friction between head coach Brad Stevens and the players, per The Athletic's Jared Weiss.
It was reportedly so dysfunctional that when former Pistons forward Blake Griffin asked a Celtics player if he should join the team earlier this season, he was advised not to because of the tension.
Kemba Walker, who was traded to the Thunder Friday, was rumored to be on the move during the offseason. However, once Walker heard of the Celtics' effort to trade him, it was evident he would not be there long term.