Like I said before Zoran was signed, I think the Suns need more than Plumlee-Len-Randolph at center (So I was hoping the 15th guy signed would be a big) . Basically, because if 1 of Len/Plumlee are hurt, the options at center dwindle significantly and I'm not sure Randolph can be counted on for a lot of minutes.
With 15 guaranteed guys right now, obviously Barron will probably get cut ... But I just feel keeping him (or any other veteran center) AND Randolph is necessary injury insurance if Len/Plumlee goes down. Unfortunately, to allow that to happen, the Suns would need to make a trade, which probably won't happen (and might not even be worth it ... Ideally Zoran would have never been signed ...)