The reason we've kept 4 starting caliber CBs is because Kompany was often injured. It's naibe to think we should have 4 senior World Class or approaching World Class CBs.
We wil buy 1 CB ( Someone big and Tall) and we'd play Dihno and Sandler/Garcia as the fourth. Quite frankly, I can see a situation where we buy no one.
Stones, Laporte, Dihno, Sandler, Garcia. 5 players. But more likely than not Pep's obsession with needing height might cause us to get Maguire.
But my spider sense is telling me Sandler becomes 3rd choice next season.