Found an off market deal, how do I close it?

[Gino Tomba]

Hello All!

I found an off-market duplex for my first house hack and have a call coming up to talk further. I found it listed for rent and so far all I know is that they have been toying with the idea of selling.

Some of my perceived bargaining chips: 

• I am a mortgage Loan Officer so it will close quick, easy, and I can give him a killer deal for his next purchase if he is looking to buy again 
• I can save him money not using an agent (I have one, but I found this on my own so not sure where he may come in on this)

What other advantages am I not thinking of?

What do I ask, what do I say, how do I move about the conversation to close a killer deal? 

I look forward to hearing your ideas. Thanks for the help!