Next man up.
Morris probably starts next to Baynes in the frontcourt. That keeps some toughness with IQ.
Morris could easily slide over to center this game. Lopez drifts to the perimeter more and more, and he is a terrible rebounder. Morris has the athleticism to check him outside and help on pick-and-rolls, without giving up too much inside. Bogut and Randle aren't scaring me too much either.
Theis could have a big game as well. Hopefully he is ready to shoot the 3 tonight to stretch the floor for our guards.
I'd give Yabu two burns too, one in the early 2nd quarter and one in the late 3rd quarter. Give him 3 minutes. If he plays well, leave him in for a couple extra minutes. If he misses some defensive rotations, pull him.
Still, everyone needs to step up in their defensive rotations and rebounding.