Can't compare Jamie Pollock and Fitzpatrick. From what I have seen Pollock is more of a winger. We really don't need a winger, nor do I buy this crap of needing a left midfielder while we have Fizzy. I think if we get a left winger in the Humphrey mould we could suffer because Murphy would be stuck more centre and although Murphy is never a left winger, he is one of these strikers that is more effective if given the right to roam to the wing, especially the left, like he did most of yesterday - and he does for Scotland ( a little like Villa for Barcelona/Spain).
Fizzy brings a natural balance, and allows Lasley to get forward more, not to mention natural cover for Hammell - something Hammell has not had in a very long time (and Reynolds when he goes on one of his daft runs). I'm unsure a winger could do such a thing.