Great topic!
I don’t see why both teams can’t retire the number, put them on the wall, etc.....
I know it’s a different situation, but every baseball team retires Jackie Robinson and there a quite a few teams who’ve retired the same player.
In terms of pride and who owns it? I think that’s up to the fans. If the Bills moved to another city, I think I’d be pissed if they retired someone’s number in that new city. Especially if we got an expansion team in Buffalo. To me, that would be the new and real Bills. Not the London/Toronto whoever’s