We didn't pay 13 million for how good he is right now. If you based it off that it would of been about 7 million. We payed 13 million for his potential. Potential that means we have to give him time. Very similar to Felli.
I agree, but Felli was at a much more advanced level when he came in IMO, as in he was able to dominate games on occasion (vs. Liverpool in Europe and a burgeoning reputation across the continent as a top talent) and his only issue was consistency which came with games at a high level. He already had the tools in his locker.
My problem with McCarthy is that, to me, he doesn't look to have the tools in the locker to make the step up to becoming an integral part of our side. I don't think of McCarthy as a physical presence in midfield, or an excellent distributor of the ball, or even a particularly decent tackler or harrier of the opposition. I see him as 6/10 in pretty much every area with little scope for improvement. In short, I see him as a mid-table Premier League squad player.
I hope he does come good and becomes a dominant force in our midfield, but I can certainly understand why Evertonians are uneasy with him.