Short Sale Buyer wants to close in his name

[Lafi S.]

Hey guys, so I have a cash buyer on one of my short sales that wants to close with the bank in his name. We already agreed to a price and he showed me his POF so I know he is serious. Now the bank is asking me to submit a final contract and I am wondering what is the best way to do this....Should I ask him to pay me the difference in price now and hold it in escrow until we close? That way I will continue to negotiate but it will be in his name. Or should I just add him to my own contract and then back once we have an approval letter.

Thanks for any help...