PARDON???? YOU'LL HAVE TO SPEAK UP A BIT.
I suspect your soon to be employer is Europe's largest regional airline, and they are considering the introduction of ANR headsets for crew, but only as a replacement for the existing Sennheiser sets as they wear out. Current headset is OK, but it is still a far noisier environment than is likely to be good for you long term. If you have your own headset, use it - plenty of guys do.