If (Quite a big if) he reaches his potential, maybe we have a future first line centre.
Zhukenov
Horvat
McCann
Cassels
No guarantee all of them pan out/ are here in the future, of course, but that's very nice down the middle.
Edit: Before everyone jumps on me, I'd love for Horvat to become an Toews-type first line centre. But assuming Zhukenov reaches his potential I take the high end skill on the first line and put the defensive star on the second.