I think you're missing the point.
Premier League Clubs can't loan anyone outside of the windows. In theory we could beg for an emergency loan but as MLG says it won't be granted as we have an incredibly experienced keeper (560 odd appearances) on the bench, and if we lose him another keeper who has already played in Premier League matches and elsewhere. Plus Cropper. None of those players qualify as "the bloke from the front row".
I think Newcastle had two keepers down and had to put a kid in earlier this season. Gazza with Cropper on the bench? We'd have to lump it I'm afraid.
It's a pain not having our first (or second) choice keeper but there is no emergency here therefore no emergency loan would be granted.
(We might still sign an out of contract player, but I doubt it.)