I know it's the Rockets' fans dream to see Durant come to Houston, but it ain't happening.
The question you have to ask is, why would he? He's already on a superior team. He's on a top 5 or 6 team in the NBA. If he's going to leave that situation, then I would imagine he would only do it for a scenario that he knows is guaranteed to be better. The Rockets would basically be rebuilding this offseason. Yes, him and Harden would be a deadly combo, but so is he and Westbrook plus they have great chemistry not to mention a much better all around squad.
I would love to see him in Dallas, but I know that ain't happening. The only places I can see him going or to Golden State for obvious reasons, or Washington because of the appeal to go back home. Outside of that, I can't see him leaving OKC.