Right now, there are 80 houses in the Knox Area MLS where the sellers have said they will carry financing or do a lease purchase. They range from "I wouldn't let my dog live there" to 1.5 million.
Most sellers who are willing to do this want some kind of assurance that you are going to follow through and actually buy the house. They also want some incentive to take a big chance on you. That is usually done with a "substantial" down payment. That number can range from 5-10 thousand dollars.
If you would like, you can call me to discuss this further to see if this is a reasonable option for you. It might put your mind at ease to talk with someone and learn more about the process. You can reach me at 865-660-0198.
Hope this helps.