Just look at Houston's bigs. That is what OU should be going after. Four guys that are all almost identical. Chaney. Gorham. Gresham. White. All go about 6'8 and #225. None of them do anything exceptionally well, but they all know how to play the game, and play within Houston's scheme. All rebound. All defend. None of them are a threat outside of 15 feet. Houston plays 2 of them at a time nearly all game. I'd take all five of them over any bigs OU has, except Manek (only because of his shooting).
OU MUST go find a couple of guys like this.
I'm been trying to think of a comp for these guys for when Kelvin was at OU. There isn't a great one. None of them are as good on offense as Eduardo. Not as stocky or good down low as Bookout. They play a little like Jabahri Brown, but Brown was longer and bouncier. They play a little like Johnnie Gilbert, but maybe more polished?