I think you will see Flybe before Aer Arann
Im not sure. Whilst I know they havent all been sucessful, Aer Arran have always seemed to have a go at regional irish airports to MAN.
They have GWY and WAT at the moment, and they also had a go at Sligo (maybe Kerry as well, or am I imagining that?).
They also had an intention to serve LDY, even though it didnt get of the ground, I think its shows Aer Arran are deffinatly ones to have a go.
Also, with the PSO routes ending, they have the spare frames, even if its the ATR42