United beat them in pre season on their own turf 3-0 didn't they? And that was with the youth team and reserve team whilst they fielded more main squad players.
Rangers manager was watching and took young winger Martin on loan as a result. Can't see Celtic beating them unless they are really geared up and United play poor. It is football after all anything can happen.
Scottish Football is just not as strong. No way near. I don't care who wins and just see it as many do, England v Scotland. England invented the game so let them teach them, l