That article is like one of those hypothetical Greenly trades that probably arose from NBA2k

Of course most of the players are available...for the right return and if Brad thinks it will make the team better. I can't blame them for trying to generate content though, the trade market is very quiet right now, probably because KD has effectively frozen it. I wouldn't say he's attracting trade interest...just that he's a tradable piece that invites people to speculate.
But...if we are doing hypotheticals, here are the players I would consider a fair return and are getting paid in that $15m-$17m range
OG Anunoby
Mitchell Robinson
I would have added Christian Wood to that list but he's going to be a UFA next season so may be a rental.