Problem is, there's nothing enforceable about a tentative agreement. At best, it's a letter of intent.
Hate to agree with the others who haven't bought into the "rainbows & unicorns" promises, but how can Parker or anyone else make promises without having done due diligence? Do they really know AA's contractual liabilities? Doubtful. Most of the delicate stuff is redacted on the public record, and would only become obvious after a NDA were signed.
Remember how DL was going to give loans to Pan Am to keep their MIA & LatAm operation running in 1991?
Due diligence proved that it was losing money far faster than DL predicted, DL got cold feet, and Pan Am wound up six feet under.
If it were me, I'd hold off on the celebratory high-fives and fist bumps until after there's something more than a letter of intent...