Finalizing lease agreement, help !!!!

[Henry Peñate]

So we are in the finalizing stage of lease agreement. We do not have a realtor as we have posted our rental through Zillow and other sites and just added a sign to the house. Our possible tenant is working with a realtor and we’ve came to the point where they are wanting to send broker form for us to pay half of month rent fee ($850). How can we waive or avoid this fee as this is the reason why we didn’t list our rental on mls with an agent. Can tenant possibly pay for the full amount ? Or how can I make this work?

Thanks , Henry from Houston TX