Bet Jet2 are "chuffed" about this, er not
I doubt they are happy, but it's not that bad for them. Only 8 routes I would consider in competition with Jet 2
Ibiza/Malaga/Murcia/Rome can probably largely absorb the competition, with maybe some minor frequency reductions. Jet 2 won't like losing their monopoly to Murcia and Rome though
Ryanair are at a disadvantage with their airport choice in Barcelona and Paris
And Milan Bergamo/Reus are hardly significant routes for Jet 2 at MAN