I don't think that will be the case so long as Glen Taylor owns the franchise but does the family keep the club after Glen passes away? My assumption is that the original decision to sell was made after consulting with his family and their feedback being that they weren't terribly interested in being NBA team owners. Perhaps that has changed.
Part of the original legislation that made the City purchase Target Center from Harv and Marv was that the team sign a 30 year lease. That original lease would have expired next year. As part of the Vikings stadium legislation, Target Center received $145 million in public and private dollars for renovations, which provided very little new revenue streams, in the scheme of things (compare and contract the $550 million renovations planned for Capital One Arena in DC, which while only 8 years newer than Target Center, was next generation compared to Target Center, with modern premium seating options like club levels and less upper level). With the renovations to Target Center, the team's lease was extended to 34-35, but has only a $50 million buyout.
Presumably, the TC renovations were as good as Glen Taylor thought he could get at the time, or its just another piece of his mismanagement of the team. If it was as good as he could get, then I don't blame him for agreeing to such a nonfactor buyout of the lease.
If Glen Taylor really wants to keep the team in Minnesota, then he needs to start the discussions now with city and state leaders and begin working on a plan for Target Center replacement. Glen has never been a developer that I'm aware of - he needs to partner with a developer that would develop the Farmer's Market site into an arena and mixed use development (hello Wilfs? Or what about the MOA people? I've always thought that a modern arena would be a great fit at MOA).
But as long as he owns the team, and intends to own the team, I don't think there will be any relocation talk.