Fair point. When Propper arrived we didn't have much choice other than to play him, but he's established himself well and truly as a first teamer now.
Going back a bit further though, we bought Duffy when many of us didn't think we needed him because Dunk and Goldson was a good CB pairing - but...
We've got the squad, and no doubt we improved the squad very expensively over the summer. However, what is needed now is to improve the team, not the squad and our record signings have not done that, not yet anyway.