Track record on buying and getting rid of CB's is a bit worrisome. Can't help thinking that Stones, Ota, Kompany and maybe an EDS might be enough, if we had two decent fullbacks and a DM. Put Bonucci, Vertongan, or a fully fit Kompany into our team this season and we don't see that much difference.
I just don't think we can spend well over £30M, every season, on CB's and not be able to work out that either: the people doing the buying and selling are getting very wrong or, that we need decent players around them to see if they're any use.
You only need to look at Boateng and, to a lesser extent, Savic.