How to get your money back from an off market deal

[Eric Ching]

I'm new to Real Estate investing and I have a question about getting a good deal for an off market property. I found an off market deal and we negotiated the price. It needs some rehabs. The seller wants all of it which leads me to my question. When I get the loan for the house I would basically give all of it to the seller, however I thought in Real Estate you're suppose to use leverage for your benefit. For example, you would only want to put down the down payment portion and loan the rest but how would you go about it in this situation? Would this be something like the BRRRR strategy?

Thanks!