I have a client with M$ to buy Note

Hello, I am a licensed realtor/ Investor for some time now, and recently a client of mine I have been working with approached me that he had a syndicated group with $20mil interested in purchasing notes. I would like to assist, but not sure where to begin. I have been successfuly closing short sale transactions and is quite comfortable with REO properties, and I am a small time investor myself, but note buying is a new arena and I just need to know where to begin.

If anyone has any meaningful information they can share it will be gratefully appreciated.