Deal Structure: Financing Terms for Low Rates

[Blake McWilliams]

We all crave finding a deal, In today's market, that results with a lower interest rate than traditional lending. There are multiple ways in order to offer a seller financed deal enticing terms to get them to back off the rate.

What if the financer is not the owner, How do you make the deal enticing for a non traditional lender in order to drop their rate. 

Currently I have found a deal in which the sellers father would love to finance the deal. Usually I would offer a higher sales price to entice a lower rate to get higher cashflow. With the father not having ownership in the property, this type of enticement would have zero effect. 

How would you structure the deal in order to entice a lower intrest rate? (All suggestions welcome).

Thanks!