Once a Kings Fan Too
Joined: Jun. 2018
Posts: 40,518
Likes: 25,399
Anaheim won't ask for anything more than a first (doesn't even have to be this year's) for Klingberg with 50% retention and a 2023 fourth, and sending Holl back would be a mistake anyway because you can never have too much defense depth in the playoffs. You won't get Barbashev, so his cap hit plus your deadline cap space should be enough to ice this roster.
With your shallow prospect pool (kinda limited to Knies, Niemela and the dubious Robertson, as far as impact possibles goes), you should make every effort to hang on tight to that 2023 first.