Who might "be available"...
Well, VGK has 4 of their five NHL signed goalies on the NHL roster (or NHL IR). Their fifth is in junior. (Ferguson **can** be recalled on an emergency basis for NHL bench sitting.)
VGK have 42 NHL contracts active, so there is (roster and cap) space to acquire/recall NHL contracted goalie. (VGK have no goalies left in AHL. AHL Chicago's goalies are: One guy from NHL Toronto. Other guy on AHL PTO.)
So, the big question is, how long will/might the guys be unavailable to play. Short term, perhaps you recall Ferguson. Otherwise, you'll have to find free agent goalie or trade for one.