your gut will be wrong. danny is a smart gm, especially when it comes to trades. there is no way he's giving up rondo, an all-star/one of the best players in the league during playoffs year in and year out for asik.
a one for one trade for harden - yes. rondo and faverani or rondo and avery and faverani for howard - yes, but for asik? one for one? no way in the world.
do houston have a bunch of really good draft picks to offer? if not, the idea is even less likely (and it's already close to implausible) to happen.