I'd definitely like Lugano here. But he's not the ideal player to place next to Chiellini. They will form a very tough partnership, though. It's just that I'd rather have a finesse ball-playing CB back there, as in someone like Marquez.
But then again, when we had Ferrara and Montero back there, those two were brutes and we still did very well. Organization is the most important facet of defending anyway.