This trade works with updated rosters.
The thinking is, Duren is genuinely threatening taking the QO, let's actually get something for him instead of letting him walk for free.
Kings give up a low first and a protected first in a year they hope they're good. They swap their young center for a better young player, and get Robinson who could be re-routed.
The question is whether you think Detroit with these picks and a renewed LaVine on a better contract would be in a situation than Detroit just overpaying Duren.