Well I'm sure a Championship team would happily have Gazza as number 1. He's not as bad as you make out, just not ready yet.
Re Butland, the reason he is going to Stoke is that he wanted Gaurenteed first team football and wouldn't be gaurenteed it at the other clubs who wanted him. So a big gamble for Stoke IMO which may or may not pay off, similar to our Gazza experiment.
If he doesn't hit the ground running, Stoke have backed themselves into a corner somewhat with this deal.