Edmonton's pool lacks high-grade prospects as the Oilers are now without four of their last five first-round picks.
www.nytimes.com
Mentioning this because I think the Oilers are probably the most likely location for Pettersson with the Canucks falling off. I think the main pieces they'd offer are St. Louis's 2nd (which the Penguins originally got for Hayes and was transferred to the Oilers due to the Broberg offersheet) and their #3 (Akey) and #4 (Järventie) prospects.
I think Akey is the main guy I like, but he's definitely more of a long-term guy. From that report:
I figure he's probably a comparable prospect to Pieniniemi, so that would be a solid main prospect to get back for Pettersson. That would likely end up being around pick #45 and Akey for Pettersson, since St. Louis is around the same spot in the standings as the Penguins.