IOM - LCY to go, but why?
Most likely because:
(a) Aer Lingus have no interest at all in it
(b) The aircraft is required to operate a new DUB-SEN-DUB route which Aer Arann will "need" to operate to satisfy their Stobart shareholder and this probably being the only new thing that Arann could do into SEN that Lingus would be prepared to put their name to