If those players really are important for the nation then the nation should make sure to keep him in a team. I guess it falls as the NT coach's job to inform the community that a NT player is for sale.
Of course this would be the job of his NT coach, but guess what?
Micronation NT coaches are lousy. If you can get the job by voting yourself or winning a dead race just because you are the "oldest" user in this game - what do you expect?
I missed a player that was once on my team, I would have paid the million with a big smile...