It kept telling me to insert the Management Disk and to press any key. I assumed that to be disk 2, but it failed in DF1: and failed in DF0:, so I just bailed. What's up with that?
Incidently, I disagree about that being the title. The Official Computer Game is just a subtitle. It's used on the title screen and the original release box, but not on the budget release box. If you have an original copy of the game (the one with the subtitle on the front) you'll note that the disks are labeled as Manchester United only with no subtitle. And the back of the box of the original Krisalis release also only calls it Manchester United.