:agree:
His technical ability is not good enough to play left back.
His physique and his playing style are far better suited to CB, where I hope he will be used in future.
I don't think it will be possible to compare the two because, by the time Chiellini reaches his prime, I expect him to be playing CB for us.
Chiellini will never be as good as Zambro offensively however he may become as good as him defensively.