It would seem rather strange to knock down three hangars that are only about 10 years old (plus the Citiexpress hangar too?). Unless MYT have decided to relocate to another airport and Monarch decide to stop their very busy business of repairing & maintaining a hell of a lot of aircraft in their hangar they will have to be rebuilt anyway, and if I remember right the Monarch hangar alone was about £7,000,000 to build last time, if the huge MYT/SR Technic hangar was rebuilt I doubt the MAPLC could afford it. It would also show a stupid level of forethought by allowing them to be built in the first place.
It would also mean the new terminal being built right next to the the fuel farm, and I somehow can't see that, maybe that's moving too.