Boris Diaw is interesting, I even liked him back when he spent a little time with Atlanta, and he would actually fill a few voids by himself. Backup 3, and a four, actually and length. My only concern is that he hasn't quite been the same player since he got that fat contract from Phoenix. His rebounding and assist numbers are down from his MIP year, and he was having a pretty mediocre year until he got traded to Charlotte, and he still didn't put up his numbers from his first year in Phoenix, with more minutes. He actually increased his turnovers by almost two, as well.
Nevertheless, certainly an option to look at.