It will be some time before they can buy the stadium outright if that's their ambition. Can't see them getting a loan to refurb the stadium as they will more than likely have to return it as they found it or go through a lot of paperwork to get it approved if not purchased.
They may not want to host an nfl team but can make it an amazing venue for concerts and other events.
But as you said they will struggle in todays financial climate but once things settle they may pursue it or sell up to a consortium and accelerate the process. All ifs and buts, currently we sit at the top of the pile in regards to stadium and infrastructure.
The daves will sell the club. Already have a good chunk.