If we sign KK we would still need ideally someone of the level of Akanji at least, but even with only KK I would be so much more comfortable going into the season with only him next to Bonucci/Gatti rather than any combo with MDL. Not that MDL is a bad player or KK is SO MUCH better, but he is a natural leader and a natural left-sided CB which we do not have since Chiellini left.