It was myself that posted the info on FF.
Thomas Cook are advertising their Bucharest trips will be flying from Prestwick.
https://secure.thomascooksport.com/booking....id=3638&m=f
Flight Options advertising flying from Glasgow.
http://www.sportoptions.com/event.asp?EventID=140
I spoke to flight options today as i'm booked with them on the daytrip.
They are aware that there is maintenance planned during that week (11pm-5am i believe), but are trying to get the airport to delay the work by a week as they (the airport) will lose out on the football flights.
Tims are also playing away at Hamburg on the Thursday, so its 2 lots of football business that the airport will be losing.
Thomas Cook seemed pretty sure that it would be Prestwick that the flights would be leaving from & Flight Options were 'hopeful' that they would be going from Glasgow, so make of that what you will.
If booking up, i'd certainly be having a contigency plan in case FO change to Prestwick.