Okoro would be big because of how badly we need a big...but I wouldn't expect him to be a difference maker next year. When is the last freshman big that came in and was that significant his freshman year. Not Egwu, Not Leonard, probably have to go back to Augie, then maybe Cook and Efrem.
Problem 2 is we were very bad underneath last year and we lost are 2 best bigs in Black & Finke. Even if Okoro comes in and produces at the level of Augustine as a freshman we are still 2 bigs in the rotation short of being good, so we need Ebo and Kane or Georgi to soldify a rotation.
I think he could has a season similar to what Tilmon had for Mizzou, with hopefully a few less fouls.