In theory letting Gareth Barry go was sensible - shifting older players out and replacing with younger and more enthusiastic lads. But we only really managed half the equation!
It's been true of a fair few players we've let go in pursuit of improvement. So far, we've not been very adept at it.
It was to some extent understandable in that we'd just signed Fernandhino. But part of the rationale was that Rodwell would be ahead of Barry in the pecking order. Which didn't turn out so well.