Guys no matter how much you dislike Brad Stevens, if he leaves mid-season that would be a symptom suggesting a very, very serious underlying problem. Forget who the replacement would be. We'd best hope that things are not so dysfunctional that an otherwise secure coach would jump ship mid-season from a .500 team.
The throughline from the IT trade to the Kyrie mess to GH leaving to now Brad leaving mid-season? That would send a message --- quite credibly and believably --- that the Celtics are a toxic organization.