He's not the best keeper in the Championship. Frankly I'd be amazed if a Premier league club took him on.
I'm in this camp. He's one of three or four outstanding Championship keepers and one of the best I've ever seen play for us, but how many Premier League keepers can you honestly say are noticeably worse than the PIG? Not many. So the only way he gets to play regularly in the Premier League is if another Premier League keeper moves abroad. And if he does that, we'll be in the running for another out-of-contract top quality Championship keeper I should think.
Keeper is the position I'm least worried about, we only have a problem if the club don't get is replacement right, but I trust them to do so.