Jim Fitzpatrick's BBC report last month was the result of "proper details" being "leaked".
Or a researcher reading Pprune and a kite being flown.
This rumour is still dragging along. It smacks greatly of the BmiBaby being sold nonsense. If they ARE going (and frankly at this stage who cares anymore?) I believe that Ambrose would have trumpeted it from the highest building in Belfast. The fact that he hasn't indicates to me either they aren't going or there is a rearguard action being fought by BFS to persuade them to stay and they are pondering their options.
Either way it appears to be neither signed nor sealed at the moment.