As a veteran of several airline mergers and takeovers I can assure you that the aircrew will be the very last to know anything about it and are unlikely to be consulted beforehand.
Anything that becomes "known", "understood" or "believed" of the entire business (inc what is reported in the meeja) before and during the takeover process will be bunkum, guesswork or rumour unless it is promulgated officially by the purchaser and rest assured there won't be much of that. Takeovers happen in conditions of hermetic secrecy.
As pilots you will be the last to know anything. Adopt mushroom mode and wait it out, there's nowt else you can do. Even if BALPA are involved you'll learn nothing until the bombshell memo comes out that explains everything as a fait accompli, and then its like it or lump it.
Sorry.
Still, Thos Cook to Lufti might for once be a positive change. I hope so.
ps. Part of the fun is inventing feasible sounding but controversial, even shocking scenarios (eg new company hub in Stuttgart or Prestwick for tax reasons, or all aircrew required to speak fluent German due to Lufti rules - courses will be provided, no wages until passed) and dropping them into a conversation with a known gossipmonger or just in a general crewroom conversation and waiting to see how long it takes them to gain traction and how much they've grown in the telling. A really skilful operator can have two or three of these running concurrently and much subversive fun can be had to liven up a grim period.
Best of luck guys!