It was Chris Paul, thanks AlCheez.
I think it's a pretty good trade for Portland. You get a player who can reproduce a fair amount of what Batum gave you, plus you get a lottery ticket in Vonleh, for one season of Batum.
Aldridge looks likely to leave, and they will have the cash available to try and woo anyone. Free agency is a tough business, but perhaps playing with Damian Lillard is enticing for someone. I doubt they get a star though.