I don't think this Garpax/Hoiball will trade McDermott.
But with the emergence of Portis, we could let go either Portis or Mirotic for Cousins along with Gibson/Snell and picks or whatever garbage is needed to match salaries, even involve another team.
I'm fine with that, but Cousins isn't going to cater to Sacramento's needs, we should use that single piece we have to move in order to build the future or acquire something else in case of injury, or even keep those two to develop as they fit Hoiball.
I think our best move is to do without this season, let the Cousins/Sac situation turn toxic so that he won't aprove a sign and trade, and then pay market value for Cousins without loss of assets.