While I think this is a slight upgrade over Bass, he is still a role player without the potential to be anything more than a roleplayer.
I think they could start him with either Sully or Olynyk, but I would have rather we brought in a true 5 like Robin Lopez than Johnson.
I would rather we spend $15 on Harris than Johnson. That being said, if this move is followed up by a sign and Trade for Harris then I'm on board.