This might be the worst trade idea I have read on here. Trade our All-Star point guard for a guy who averaged 7 and 4 in the EURO league last year. Rubio is has zero athleticism, is unproven, can't shoot, can't defend, and will NEVER be the player Rondo is. Rondo would absolutely destroy Rubio.
I also don't really see the advantage of picking up Derrick Williams. He plays the same spots on the floor as Jeff Green who Rivers is already confused about how, when and where to play. Also, I don't see how adding Derrick Williams turns one of the worst benches in the NBA into the best bench in the league.
I'd prefer this organization to be in WIN NOW mode, and if not, be in rebuilding mode, not just make some random trades mode and see what happens.