Gee, by this trade, Vegas gains very little cap space. Pietrangelo isn't waiving for Leafs....you have to know the reasons.
Leafs are't trading for 6m goalie. Just sign a UFA.

Take out Jarnkrok and Flames consider

I played around with a potential trade and yes while they don't save a lot of cap space, they can still resign marchessault and create a scary lineup where marchessault, hertl, Marner is a 2nd line. In terms of the goalie trades AI was able to make the money work for what is a #1 goalie and only 2 years. A Markstrom/woll tandem will be way better than this past year.
That being said, it is highly unlikely. If Vegas looks to clear salary it will most likely not be with Petri. Karlsson maybe but most likely not petri.

Jarnkrok is a salary add in to give the flames a good solid middle 6 forward that they liked before. For one year a player very capable on penalty kill and scoring 15-20 goals. If anything, he helps with experience and gives an asset to trade at the deadline for a 2 or 3 round draft pick.

Replace Jarnkrok and Abruzzese with Knies and Calgary might consider it if they really like Knies.