I don't know if the Kraken would make that deal, it seems like a fair trade. However I think that if Yzerman wanted Dunn he would've traded for him pre-expansion draft. Who knows? STL could have been asking for an arm and leg for his rights.

Agreed. Plus Dunn’s value is normal again, higher than pre-expansion so this might not be enough as SEA has no need to move him.

You're right, Dunn's price has gone up substantially. I'd think that Yzerman would have to add a D prospect. The Kraken picked up some viable D-Men so kicking the D-can down the road by investing in a D prospect is plausible.