I don't think the issue with Olynyk is him busting or not. His offense is versatile and that alone will keep him in the league. The problem is he plays no defense whatsoever, and his ceiling is very limited. He's going to be a backup big for his entire career, which is a very solid pick considering this year's weak draft.
HOWEVER, the issue is that with Sullinger and Bass already on the team, Olynyk's talents are a bit redundant, and our frontcourt looks especially feeble defensively especially once KG leaves. Additionally, the fact that we traded up in order to grab this guy is quite ludicrous. He was almost certainly going to be there for us at #16, and we pretty much traded two future 2nd rounders so we can pay Olynyk more on his rookie scale contract.