There was a nice Nice rumour briefly, and a French guy living in Paris mentioned he had heard Orly, a bit like the guy living in Manchester that is hoping he can give that rumour wings.
With so many aircraft on order anything is possible, but the current persistent rumour is Roma, with Berlin having gone a bit quiet.
Have also heard Palma & Vienna mentioned. . . . . but nothing like as frequently as BCN/MAD was in the past.