Can someone help me with this double close deal?

[Mike Cardenas]

Someone please help me out with this.I have a property i'm getting for 32k.It is a 12 unit building.6 currently rented out.6 vacant.I have some investors interested and willing to pay up to 80k for it.The investor i'm getting it from wants the 32k wired asap.I was trying to get this under contract, then assign it to my end buyer.The seller doesn't want to do it that way.He wants me to do a double close.I'm not too big on double closing.I am a beginner at investing.I've done alot of research, but this is my first deal.Any advice about how I should do this deal will be appreciated.