Need Help Purchasing Directly From Owner

[Nathanael Troupe]

I've had the great opportunity of meeting a home owner who is willing to sell me his home, and we've agreed on a price. However, both of us have never sold or purchased a home without an agent. I will be financing the purchase and my lender tells me that I will need a purchase agreement. Anyone have experience buying or selling without an agent? Is there a generic purchase agreements that you recommend I use? 

Thanks!