I'd be fine with bringing back Greg if the money is right; the problem is that at the moment we're kind of overstocked with bigs (not that any of them are great).
If we can dump Bass and / or Humphries on somebody, I say sure, go for it.
Greg has no upside but he's cheap, knows the team, has a good attitude, and can eat up the minutes that aren't being force-fed to our younger guys.