Adam Davies. Greatorex isn't ready to step up, Walton is injured and I wouldn't want a loan keeper brought in to be expected to quickly get a good understanding of our defence, whilst dealing with the pressure of keeping up our form. It was OK for the odd game like at Accrington, but if anything happened to Davies long term it would be worrying.
Add Dougall and I'd say that was the spine of the team. Davies has recovered well this season too & as things stand we would be screwed without him.