First of all, this article is bullshit to sell this to us better. "no no we have to pay this so after richardson sells the team the new owner won't want to move them to LA." If that were so important to him he could cut a check. Don't buy this for a second.
Regarding succession, keep in mind that there are other owners of this team, some of them with very deep pockets. I would be very surprised that if there's another majority owner, it didn't come from inside the group already owning the team.
The other, fun possibility is that someone with ties to the NFL buys in. The Panthers have been very successful within league politics bringing out their former player/owner, and richardson really love him the ties to the North East.
Unless Brad Johnson has become a millionaire and I didn't notice, there aren't really any other NC based players in a position to buy the team. CURTIS MARTIN ON THE OTHER HAND....
For some reason I thought you lived in Atlanta.