Could be completely wrong, but I would imagine nothing. Sheffield 3 bought the ground from SWFC Ltd, therefore unless they paid all the money up front, Sheffield 3 still owe SWFC Ltd.
Yes, admin controls the money. But the job of the administrator is to try and pay back as much money as possible to the creditors. DC is the main creditor of SWFC.
Any money raised by the administrators would be returned to creditors. The main one being Chansiri. Spending should only begin when the administration process has finished and a new owner is in place.