IAG won't have far to look, if they really are looking. BA are getting a pair of A321NEOs in 2018. Those aren't the LR versions, though. The first LR is coming to EI in Q1 2019, swiftly followed by another pair. The last 4 will be delivered in 2020. If IAG really do want to compete with Norwegian in summer 2018 they'll need to find some more 757s, or lease-in capacity as in previous years.