Boston is roughly 7.5million over the 2nd apron this year. So yeah if they dumped Springer, Kornet, and Tillman and brought back no salary and didn't sign anyone, they could get below, but that isn't reasonable. They are a 2nd apron team this year and next year.
And what 5 million or so player is going to replace Porzingis? And how would Boston remain a contender without any big men?