Buying and renting back to current owner

[Emerson Harbert]

I have a person that reached out to me. I could see he was stressed all the time. We started talking about life. I found he was behind on his mortgage, he lost his oilfield job and took a lower paying job. He owes 141000 on his house that is worth about 230000. I can buy it from him and get 16k at closin. Only cash flow 100 a month. It would lower his payment by 400 a month. I'm giving him an option to buy back in 2 years. If he does he pays me 10k and any appreciation over 230000. Has anyone done this or is it to risky???