If they trade prospects/picks, and I imagine they would since the current roster doesn't have much desirable upside outside of guys who won't be moved, it'd likely be a combination of Maata+high draft picks/depth prospects like Samuelsson depending on the winger in question. The only other high profile guy I'd feel pretty confident about them moving in a deal is Dumoulin. He's got size, is a smart player, is solid offensively and likely could play in a bottom-6 role right now for a number of teams. I think the Pens would be more apt to moving Maata since he is much further away from contributing.
Despres on the team and won't be moved.
Morrow is only going to be moved in the case of a big return, i.e. Iginla.
Likely the team is higher/has placed more value on Pouliot than any other club, so I don't see him being moved, though didn't someone post that Calgary was really high on Pouliot? Man, I want Iginla on this team. Offense would be completely unrivaled and he fits what they need so well it's not even funny. I try not to think about it since I can't ever see it happening.