Read this! Concentrate on this: But United executives were uncomfortable with the requirement that because US Airways pilots have a change of control provision in their contract, the deal would have to be structured in a way that US Airways acquired United, said the people, who could not be named because they were not authorized to speak about the negotiations.
So basically US has to merge with an airline that is in worse financial shape than US Airways. Why would a financially sound AA want a crumbling US other than a loss and write-off? Otherwise if US goes back to bankruptcy there will be a lot of airlines bidding on it. Since I learned something from the WN/Republic bid of F9, I have a feeling that many airlines including LUV will put a bid for US. This would probably kill, imho, the change of control provision because U were bought rather than merged. So sue me if my analysis is wrong