Chiarelli would want Krug for Puljujarvi, no doubt about it. That'd be a no from me.
You can build a damn good team if the goalies only take up 3 mil of cap space.
The reason guys like that get stuck in the AHL is because lots of NHL teams have good backups. Finding another Halak isn't impossible. Easier than finding a good center.
There are tons of reasons to not trade Rask you just pointed out maybe the best reason not to move him but Zane McIntyre becoming the backup absolutely is not one of them.
Rask is fine but if he can bring back a center better than DK I do it and enjoy not having to pay for goaltending for another couple years. One more really good high end player makes this team untouchable.
You can't get that trading Backes though which is about all the people who hate on trades ITT are willing to give up.