How about Latrell Sprewell?
Great scorer, can play SG and SF. Also not a poor defender - he averaged 1 bpg in his rookie season and 1.7 steals in his last season (03-04)
He is (extremely)crazy, but KG is a very good friend from their days at Minnesota.
He also has previously wanted big money (turning down a 7 million a year contract saying "I have a family to feed"), but since the federal government are repossessing almost everything he owns right now I think he'll sign for vet minimum.
Am I crazy/hopeful/stupid, or does this idea have some merit?