Jon, I'm not sure if the "language barrier" ;) is preventing me from making myself understood, or whether this type of arrangement really is unknown in the USA (which would surprise me).
You mention an "investor", but I'm not proposing having an option to purchase as part of the arrangement. I'm looking for somebody wishing to operate a property management business via a master lease; the person has no ownership in the property, now or in the future, they simply use the asset to operate a business. This arrangement is used extensively in Australia (we call it "management rights").
How it would work is that the master lessee pays me (the owner of the property) $170K pa, and in return they have the right to collect all rents, and the obligation to perform all management, repairs, etc and pay all operating expenses. I estimate they should earn about $280K pa, for a profit of $110K pa for operating a property management business.
The difference to me is between making $170K pa with no hassles, and $220K with potentially many problems. A $220K return would be after paying a property management company $60K in fees. Effectively, what I want to do is pay somebody $50K extra in management fees, in return for their taking on the risk of higher vacancies and repair costs, etc. If they can operate the business better than my property management company and have lower vacancies and repair costs, they may make even more than $110K profit - good luck to them. :)
I'm not looking at REITs etc because 1) I like to have more control over my investments, 2) I can't leverage to the same degree, and 3) they generally have much lower ROIs.
If anybody understands what I'm describing and knows if I'm using the appropriate terminology and can provide any advice, I'd be most grateful.