Anytime anyone has brought up the idea of Jimmy returning I have always immediately thought they were living in a fantasy world - that it wasn't even possible. I've reconsidered .......
Jerry Jones is not above making a grand statement, and what better statement could he make about his commitment to winning than to hire Jimmy again?
And Jimmy has enough ego that I could see him wanting one more opportunity to prove how good he is. Plus, the competitive fire isn't so hard to put out.
And Jimmy could likely return with much of the control that he wanted the first time. Obviously Jerry will be involved no matter what, but Parcells set the standard by coming to terms with Jerry about who makes "football decisions", and Jimmy could do the same. Jerry is older and a wiser about such things and knowing where his bread is buttered than he was in the early 90's.
I still think it's unlikely, but far from inconceivable.