Jaden Springer’s spot on the roster is a bit of a problem. His contact of 4 million dollars is fully guaranteed, and he’s not shown any flashes in this preseason of cracking the rotation. If the Celtics were to make a move like this, they would save about 2 million dollars in salary and if they were to cut Butler, they would free up 2 roster spots, one of which would surely go to Lonnie Walker. Walker is a proven rotational player, and signing him after this would still leave the 15th roster spot open.