Ducks got Lindholm and Rakell settled and Despres is on LTIR for probably the entire season. They need another top-9 forward, especially when they're going for it and making owners spend to the cap. It also doesn't discount the fact they have a ton of good defensive prospects and Fowler's chances of being extended grow by the moment. He's been really good.
Ritchie Getzlaf Perry
Cogs Kesler Silfverberg
_____ Vermette Rakell
Garbutt Wagner Boll/others
There's a pretty clear need here, either an ELC/low contract RFA or an impending UFA in the next few years. Ducks have to offer: Theodore, Montour, Larsson, Pettersson. Some very good defensive prospects.
If your player has over ~1.5m contract (otherwise sending Stoner to AHL makes it work), Stoner has to come with it and Ducks add assets accordingly. Who's out there aside from the already beaten to death proposals like JVR? Doesn't necessarily need to be top-6. A good 3rd line LW will do as well.