You are correct that AirAsia have been designated as an "official airline" for the Manchester United Football Club in England. It is not because they fly into Europe, as they do not, with the only "long haul" operations that they do, being the special "charter flights" for The Hadj each year, when they bring in Boeing 747's and other aircraft from a variety of operator, as do many airlines from countries with a large Muslim population.
I understand that they felt it a good marketing ploy for them to sponsor the "infamous" Manchester United Football Club, as this club has a very strong following not only in its home market of Malaysia, but right across Asia, as AirAsia themselves are trying to cover Asia with their expanding low cost airline operations, it seems it could pay dividends for them.
With regards to the Airbus order, I agree, with those above that this is advising of how they intend to obtain the financing for these aircraft and not any new orders for them, per se....
Many Greetings and I hope this helps you out !!!