You could do a sandwich lease option where you are basically in the middle between the seller and tenant/buyer. Ask him if he's willing to enter into a lease option agreement whereby he will get his asking price for the home and then tell him that you will work with him to find a tenant that he can then screen to see if they would be a good fit. Once you do that you can either do a sandwich lease option or just a wholsale lease option.
A sandwich lease option is where you have 2 contracts one with the seller and one with the buyer. I would see if the seller will agree to adding you as a "tenant in common" on the deed of the property basically making you co-owners. The contract with the seller will cover his price and terms. The contract with the buyer will cover the rent amount and anything else the buyer would be responsible for such as yard work etc. You have to be careful with this because of Dodd-Frank it cannot look like a disguised sale. This puts you in the middle thus the term "sandwich lease".
With a wholesale lease option you only have one contract with the buyer once you've found one that the seller approves of and then you simply assign your part of the option to the seller so you're out of the deal. This works best with seller financing where the seller of the property basically becomes the bank. I'm not entirely sure if a wholsale lease option is entirely legal because you are assigning your option to the seller so if I were you I'd see about doing a sandwich lease option. Hope this helps you out.