My problem with Olynyk is the same problem I have with tons of 7 footers(I know Kelly is 6'11" now due to barefoot measurements), lack of rebounding ability. I'm sorry, but if you are 7 feet tall or taller and can't average over 10 rebounds per 36 minutes or have a rebound percentage over 16%, I am not a fan of your game.
That said, if the Cs can land him for the taxpayer MLE and give him Semi's or Wagner/Kornet's roster slot, that would be a really nice upgrade.