FlyBosnia
Report on the web that if FlyBosnia leaves Sarajevo, it might not be at the choice of the airline. Sarajevo airport apparently has concerns about the money owed by the airline to the airport.
I imagine Luton will have asked for some sort of security deposit from the airline to cover the various airport fees, but one wonders about the long-term financial situation between FlyBosnia and Luton, and how long Luton will have direct flights to Bosnia