Show home without owner taking my client?

[Alan Quan]

Hi, long time lurker in BiggerPockets first time poster.

After months of listening to the BP Podcasts and other courses I bought, I just got my first contract! YAY!

Here's the situation:

The seller is still in the house, and I got the contract signed for x amount down with y amount monthly.  He's willing to owner finance.

My exit strategy is to find a buyer with a much larger down and collect the difference in the down because his monthly is high and I probably couldn't get enough spread to make it worth a sandwich lease option.

The thing is, he's already advertising on all the real estate sites (zillow.com, fsbo.com, etc) and I want the buyers to go through me.  If my buyers meets the seller directly, and find out how low he wants down... they may bypass me, deal directly with seller, and I'm left eating all my marketing costs.

Any good suggestions or posts that discuss this?

Thank you!