Why do you guess that? I've been saying for a few weeks I bet they go for a C/W because (a) they can slide McCann to L2 LW without screwing over Zucker's line and (b) it gives them another option to slide to L2 LW if McCann doesn't work like before at L2 LW (McCann goes to L3 C).
I mean, THINK about it . . . if Geno were done, Hextall wouldn't be shopping for a C. He'd ride the guys he has and hope for some luck,
EDIT: If you want to say 'insurance in case Geno's recovery takes an extra week', THAT I'd get, but 'he's done so let's get Jeff Carter' can't even be rationalized.