To be honest, I am not that excited about Jevon Carter. I would rather use the TPE on Achiuwa, if he is available. I would be all for bringing Griffin back if there is a spot for him.
It is true that a $6.2M TPE does not buy all that much these days, but hopefully something will come available. I would be happy if it was Achiuwa, but I don't think he would have that much of a role come playoff time. He is a solid big to help reduce the load on Porzingis and Horford during the season though.
I wonder if a more productive strategy would be to try and get Brissett and/or Stevens to the point where they are actually useful players. Based on their careers prior to Boston, you would think they could be doing more. What is the problem there? Is there some way to fix the problem. If those two guys became actually useful, that would solve our depth problem.