Buying down a loan for a seller so that they could owner finance.

[Padric Lynch]

Let's say an owner owes 10k on a property. Could I pay down that loan, subject to the owner financing their property for me to purchase? Or does it have to be free and clear from the get-go? Please, If you need me to clarify or elaborate don't hesitate. Just got the wisdom teeth yanked today and am feeling foggy :/