I have no earthly idea why the Bught is used. It's not in the shinty heartlands of Badenoch, Lochaber or Argyll. The surface, traditionally excellent, has been terrible for years and the stand facilities like a village rugby club.
The other options are An Àird at Fort William but the night out for the committee men wouldn't be as good as Inverness. Also, Mossfield in Oban but Man Utd couldn't afford to stay in Oban in the October holidays.
In any case even those three are no bigger or fancier than what you see as you drive through any Irish town or village and the soccer pitches are too small.