Retention and a couple of cap dumps. How can they say no?
If it's a bad proposal, I'm ok to let it die. It's just hfboards trade rumors.
But since you asked.. A rebuilding team turns a 34 year old into a 23 year old. That in itself should be considered a huge win. Not to mention they fill a major team need as well with a top pairing LD.
In 1.5 years Jost and Compher's contracts expire. They could easily rid themselves of them at this time next year if they really needed to. In 2.5 years Kopitars does (rentention stops). At that point, the Kings, presumably contenders, will have a top pairing defenseman locked up at $5mm for another 3 years. That is one of the best contracts in the league, especially as the Cap rises.
The Avs would be taking a big risk here as this is basically an all in move. If they don't win in the next 3 years, this would go down as a horrible trade for the Avs.
Also Jost is not a cap dump and most Avs fans would probably prefer to keep him as the 4C. For me, it's a roster construction issue, and I would prefer someone who can play more of a physical game as my 4C. I do think he would fare better with LA's play style than the Avs, but he could be taken out of the deal entirely and it wouldn't change much.