Sheesh, I don't know. He may not even be in the organization yet (in other words wishful thinking for Jack Hughes). I expect Getzlaf to extend on a two or three year contract and retire a Duck. If that doesn't happen and Fowler remains with the Ducks for the remainder of his current contract, then I say it's Cam pretty easily.
But if Getzlaf stays in Anaheim another four or five years as I expect, then maybe Lindholm is the next heir or one of Steel/Terry.