Lots of solid prospects in the system, a roster player plus a prospect for an upgrade has got to be in play all over the roster assuming the player brought in is affordable against the cap.
In terms of what needs to be fixed on the forwards, Marchand and the entire 4'th line come to mind. I hate to sell low on Brad, but $4.5 mil a year for what he is doing isn't cutting it. I don't know if change of scenery is what is needed, but his spot is one which isn't producing. Perhaps they're looking for a complimentary player for Bergy and Loui.
The collapse in production of the 4'th line can't be ignored. More like vinegar than Merlot at this point. The line is on track to have a total of 15 points this season. 72 points in 10/11 with Paille missing 39 games. 44 in 11/12. 37 in 48 games last season. The thing is, if Paille was moved I could see Knight slotting into his spot to gain experience, if Campbell was moved I could see Spooner on the 3'rd and Kelly or Soderberg on the 4'th to perhaps make that line effective again. So other than Thornton, I don't see the need to go outside the organization for a 4'th liner. Thornton surely is on his last contract, could they be looking to get his replacement by trade instead of Free Agency?