The only two names out of the leftovers that Bruno listed that I could see them having interest (and I use that word loosely) in, are Pietrus and depending on where he's at physically, Howard.
ace, what impact did Joseph have in the first 3 rounds? I've never seen a rotation player with less responsibility in the playoffs. He'd literally come in for 2-3 minute segments, advance the ball, give it to Ginobili and go spot up. He didn't show a single discernible offensive skill outside of cutting . . . which is nice, but much like rebounding (for PG's), it's a secondary skill.
Chinook, in those cases, they had no one better, limited means to get someone who they thought might be and as usual, they were turned down by them anyway. Besides, none of Splitter, Leonard or Green, were projects. People pretend Green was, but he was always the 3D role player he is now, he's just gotten better in both areas.