What's the issue between Zadorov and Colorado? Also what is he looking for on his next contract? He doesn't make the most sense because he's a LD but Sergachev prefers to play the right side and this will allow him to do that. It depends on the cost to acquire and what he wants in a contract, he's arbitration eligible so might not be a target as we can't accept an arbitration deal we don't want when we have others to sign.
To me this seems like an offseason option, especially with how much cap space Colorado has. Something like Miller + Callahan for Zadorov. With the intention that Colorado would buyout Callahan. Similar to the deal you did with Washington but instead of a pick it's Zadorov and Miller is a proven player unlike Grubauer who was more potential.