Should I get a broker if I found an off-market property?

[Anders R.]

I've been meeting with a property owner who wants to sell and would like to do a cash deal.  Based on a back of the napkin calculation of the possible selling price and monthly costs, etc, the property would cash-flow.  I've gotten to know both him and his wife over the last several months and they say they are both getting old and just don't want to continue being landlords. 

There is obviously a ton of due diligence I would want to do before moving forward, but one top question I have is whether or not I want to get a broker involved.

 I'm not really concerned about the broker commission, I'm more just not sure what might happen after I inform a broker about an off-market listing in a super hot market. 

Any thoughts or insights would be highly appreciated!

-Anders