Walker's a funny one because not that many people seem to rate him (I think it was Paul Roos who suggested recently that maybe even Carlton don't rate him)... and I'm not sure why. Curse of the utility, perhaps? If he plays in one position more or less the whole year, he'll turn some heads I reckon.
I don't imagine he'll be out of the forward line this year for Carlton. Not unless he's dropped. He's been great as a 3rd tall forward so far. Would surely turn some heads if he ends up with 40-50 goals like he's on track for.