Sorry to be a doom sayer but: The chances of BD existing in their present form in 1 Year are slender - in the extreme.
The value is in the slots and routes and some of the staff and, depending on how it's financed, selling off the premises and equipment. BD on it's own cannot compete downwards with the LCCs nor upward to long haul. It will get squeezed out. IAG only want the slots (and mebbe some routes) because that's the way they have really grown in the last 25 years, buying up and spitting out smaller carriers. Since it worked for them in the past, they will presume it will work for them again.
Assuming that someone DOES buy it, we can but hope that not too many staff lose their jobs. Of course, the support and admin staff will lose the most.