He wishes to discuss terms of your surrender.
Paul Ryan: Mr. Trump, how do I know you'll keep your word?
Donald Trump: Oh, I've given you no word to keep, Mr. Speaker. In my judgment, you simply have no alternative.
From Brother Charles Pierce:
...Let us be very clear. He, Trump is interested in winning. Period.He doesn't care if the institutional Republican Party exists beyond election day. He doesn't care if half the House Republicans get voted out of office in favor of tropical fish. He is not invested at all in Paul Ryan's political future, but Ryan knows that, if a Trump campaign craters the party in November, he will find himself nothing more than the most influential corpse in the morgue. This was not a meeting about "unity." It was a meeting about how to make the best of things when you suddenly wake up and discover that all the power in your political universe rests with a vulgar talking yam.