If the property is already in contract (signed by all parties), then the most you can do is submit a back-up offer in case the current deal falls apart. If you have a Realtor, ask them to contact the Listing Agent and ask if the seller is accepting backup offers. If they are, submit one. (In this market, it is becoming more and more common for backup offers to end up being the people to get the home). If the Listing Agent says they are not accepting backup offers, have your Realtor ask the Listing Agent to keep their name and number is case the current deal falls apart.
Licensed R.E. Agent
Century21 Yve R.E.
NYS Certified Residential Appraiser