Lease Option on a Short Sale?

Can you do a lease option / Use & Occupancy on a Short Sale, In other words if you get an exceptance on a Short Sale n your end buyer cannot get funded what can u do at this point, b/c I believe transitional funding company isnt going to fund the first half of the deal if u dont have a qualified buyer in place…

And is it true that when u do a Short Sale, the only way to close the deal is the bank has to get the full agreed upon exceptance, or maybe (as I mentioned above) bring the loan current via lease option buyer, but then u will have to maintain the terms of that current loan?..Someone give me some light.