I think we all know who is here already:
Rondo
Bradley
Pierce
Bass
KG
Green
Terry
Lee
Wilcox
Sullinger
Melo
With the remaining 4 roster spots I would go
Dooling
Daniels
Joseph
best available big who is actually a center (Darko, Steamer, Birdman, etc.)
I would have to agree, with your final 4.
Dooling will serve as a nice insurance policy behind RR,AB and Terry.
Daniels has been with the team a while and gave some solid minutes in the playoffs. If Pietrus isnt willing to take such a reduced role/vet min then daniels is the guy. Another option could be Sam Young who is still out there.
Joseph definitely gets signed
Big man for the last roster spot
a few ways to go ways to go
unproven younger guy(but not a project we already have melo)
or
vet looking to jump on for playoffs
or
Journey man
possibilities
younger guys
Jon Leuer
Hamed Haddadi
Vets ? (hard to know who isn't retiring)
Tony Battie
Eric Dampier
Jason Collins
Jamal Magloier
Ronny Turiaf
Ben Wallace
Joel Pryzbilla
Journey man
Sheldon Williams
Lou Amundson
Brian Cardnal
SCAL !!!
Jason Maxiell
Craig Smith
some interesting option, I could see Jason Collin being a nice fit or posibly a return trip for Sheldon or Scall (not really)