1. I'm sure I look like the big guy who doesn't care about the sub contractor. But you are going to earn more out of this deal than any deal you have ever worked before

(remove the negatives. Enhance with a positive) 

2. How am I going to do that for you? 

(when you want to say no. Do it as many times. And when they say take it or leave it, you know you have maxed that vector out, then pivot to another vector) 

3. Be nice. And be persistent. Let them leak details. 

4. Give the other person the feeling of control.

5. My guy researched this deal and you want to sell because the market is low. (no no, that's not the reason, the real reason is... ) (get people to leak sensitive information by getting them to correct you)