Up to £10m I would buy him. Young enough to get better under LvG and had an injury free season contrary to Vermaelen or our 3 remaining CB's. We can't do much wrong if not to expensive.
I'm pretty sure Hummels is not availbele this year. Benatia has never been mentioned and Garay is off to Zenith. Mangala seems overrated. It doesn't look like we are getting an instant Vidic replacement, a top-class defender.
Therefore we maybe should be after a potential star. Are there any english defender besides John Stones who fit in that categorie? Where does M.Keane rank amongst them (targets like de vrij, Martins Indi, Vermaelen)?