Is a double closing possible?

[Nat C.]

I submitted an offer on a property which was accepted. After inspection I decided I didn't want to proceed with the deal. One of my best friends inspected the property and said he wants to buy it. The contract says I can't assign the sale. What methods can I undertake for my friend to buy the house instead of me? I'm of course not making any profit here. Can I do a double closing and can anyone explain the finer details to me?