I'd agree that he has been prone to howlers, but when on form he can be a very capable keeper, worth keeping as a back up at the least.
Aye i forgot about maybury, id be keeping him as a first team pick too.
Id also hope to keep seve foster and touzani, all can be useful players when theyre on form, and i really think they would benefit from 1) being fully fit 2) having competition for places.
I know this wont be a popular idea but as a last resort id be keeping bryne as well, on the provision that he only ever plays centre half, he's seemed solid enough in there.