He’s a good shot blocker, but he’s about 195 lbs and not that tall. There’s a big difference (in my eyes) between being a 5 long term and potentially at some point being able to play a smallball five. So I would say definitely at the four.
I know some people are down on Nance, but if you watch him play then you can kind of see why people think so highly of his future. He has some impressive tools