buyer's broker cash back - is there a form?

Question

Hi,
I am a buyer/investor. The listing agent at one of the homes I found by myself and intend to buy is offering me 1% cash back from his total 6% commission,  if I do a dual with him. It sounds like a win-win situation,
1.  Is there a way to get a written statement for this (any CAR forms) instead of just relying on this at a verbal level. I do not know this realtor before,  nor I do have/ intend to sign any sort of buyer/broker agreement with him that extends beyond the domain of this particular home. 
2. Also I want this to be fully legal and fully disclosed on my HUD and be used towards my downpayment/closing costs. I am aware that some lenders do not approve his sort of cash back at HUD, but is there something else I need to be aware of and watch out for.
Thanks in advance for your valuable advice.

Sundar Krish · Answer

Thanks Scott and Steve.
Scott, the listing agents' reply is somewhere along the lines of 'just trust me' and that's why I want to know if there is a way to put it on paper.

Steve, this is a short sale ( Nation Star - 1st /BOA - 2nd).

Steve Babiak · Answer

If this is REO, some of the bank addendums will have a clause in there that if the buyer is also an agent (or has some relative as agent), then the bank will not pay the buyer side any commissions.  You didn't mention whether this was or wasn't REO, but that is something to be aware of (and it isn't always used by all banks, only some).

J Scott · Answer

Sounds like good questions for the listing agent directly...have you asked her?