I am willing to bet a year ago, no one thought Kevin Love was going anywhere.
What? Pretty much everyone called this happening when he was signed to his current contract because of how upset he was that he didn't get the full five years. Almost everyone knew this was going to happen unless the Wolves made the playoffs last year -- which, obviously, didn't happen.
Regardless, Cousins' four-year deal kicks in this season, so the Kings are under no pressure whatsoever to trade him even if he does grow unhappy next season. There's a reason you generally don't see guys like Love, Melo, CP3, D12, etc. traded until their contracts are about to end: because teams try to do everything in their power to convince really good-to-great-to-elite players to stay for as long as they can. There's no chance of the Kings losing Cousins anytime soon since he's been locked up for the next four years, so...
While I concur completely on all your points here, including the specific on KLove, to be fair to gpap, his second sentence after that was:
"It seems every year, there's always at least one NBA star who's rumored to be on the trade block."
Which is his real point. And that does tend to be true. For example, while certainly a few folks hypothesized about it, most people did not foresee Lebron going back to Cleveland this year, which really shook things up.
I think the point is simply that, while we can make some reasonable projections, there always seems to be one or two big changes or events (injuries, lottery results, unexpected trades, whatever) that changes the landscape. A big star could get hurt this season. An unexpected player could emerge as a star. Somebody gets disgruntled and wants a trade. And so on.
Reasonably, I doubt Danny has a bunny's chance in a lion's den of landing Kevin Durant.
But I won't be shocked if SOMETHING changes between now and the summer of 2015 that allows Danny to do something that we can't easily foresee right now.