as stated before on this forum by numerous posters, they should sign jeff green for the min this season with o'neal roster spot so as to reduce jeff's cap hold in 12-13, and create more cap space
They should have about $24 mill in room with pierce, rondo, moore, bradley, stiemsma, jujuan, and draft picks signed,
it might take around $15 million to resign garnett and allen
that leaves around $9 million in cap space, after jeff green signs, little room would be left, unless he had a low cap hold value, and you used the room before signing him.