I agree and I don't think the Panthers will move, but some people don't care if a team is doing well or not.
Lets just use hockey as exemple. If Quebecor was to buy any NHL team, their interest would be to have that team end up in Quebec City where they have an arena for it.
Same thing for Lewieke, he wouldn't buy an NHL team to keep it where it is when he has a deal and an arena for him in Seattle.
So, like I said, I don't think Panthers will move, but we have no idea who will buy them, and relocation questions honestly are linked to the buyer.
Speaking of which...does NFL has a rule like NHL does ? NHL, when a new buyer acquires a team, unless it's part of the original transaction (like TSNE buying Thrashers) the league includes a 7 year no relocation clause. If NFL has the same rule, they could ''force'' the buyer to stay in Carolina for at least a given number of years.