Taking up other interests suggest that he has probably decided to leave before he was pushed. The current expansion is untenable without some significant building work and
the airport needs to forget building another runway or a link to an HS2 station and build another terminal or some extra piers and an expanded arrivals hall.
Some high speed turn offs from the runway would improve the movement rate.
A new ground movement radar is not going to be much use when the airport has lost 50% of its all weather capability.