I could be wrong, but I think there are 3 potential problems that will limit the value of the domain -
1. As has been mentioned, there's the pass off issue.
2. You have one potential buyer. Not always a bad thing, but competition drives the price up and if they don't want it, then it could be worthless.
3. I'm pretty sure Dundee FC have been in administration at least twice in the last 10-15 years. Scottish football doesn't have a great deal of money in the first place, but this is one club that probably doesn't have deep pockets.