What Cal has proven tis year is the considerable advantage of having two elite shot blockers on the floor simultaneously. So many blocks are from the off the ball defender. Therefore, not getting Rabb won't matter if Cal can get Maker and or Swanigan/Big Z to go along with Skal, AP,Lee and possibly DJ, our dense will still be formidable again especially since Briscoe is supposed to be good defensively and I know Mathews is REALLY good on defense.
I think there's a chance that DJ comes back. I do not believe there's a chance in hell that Lyles comes back.