Would be a reasonable ask, but reality is if Holden is such a bad contract you have to attach something to him to move him then it's not really worth it since he's got a year left. Doesn't look like they have any cap issues next year so might as well keep him. Only reason to move him is to free up money to sign Gusev. Clarkson being moved is fine but once again it doesn't help with this short term issue they have.
These posts show why so few people have what it takes to be a GM. It's a job that is 50% strategy right now. NHL in a hard cap is a math problem to solve, not a talent problem. Drafting is where you need to be talent focused. Signing players is a math problem. Players aren't worth what their stats or even talent suggest. Their true value is how much they can exceed the money you pay them. To me the Knights are doing extremely well in this regard with most of the signed players. Sure there are a few that aren't good values, but every team has them. The excess value they get from their plethora of contracts between $4m to $6m allowed them to get Stone and Patches at probably fair value. If they get the nerve to play Glass this year and two rookie D, surely more excess value will come as these guys all appear to at least be better than minimum contract veterans.
So I trust that if Gusev is traded they actually are looking for more real signed assets, not just wishes on draft picks or far from ready prospects. If to make it work you send Holden or Clarkson great, but no need to give value away when those problems don't last past this year.