According to the article that I read this morning on this subject, it is expected that General Electric will team up with Goldman Sachs, rather than make a bid of its own.
On the other hand, I am sure Ferrovial will not go without fighting and they will add more investors to their consortium so as to be able to make a higher offer. Perhaps Macquarie would join Ferrovial, or at least so has been speculated in some media. It will be interesting to see what happens, because Ferrovial needs to launch its offer quite soon.
I am not sure which other airports belong to or are operated by BAA, but I understand they do have assets in Hungary, so maybe BUD
is operated by them.