The usual private equity move is to take over, rapidly sell or borrow against every asset to hand the people behind the takeover an instant profit whatever happens to the company being taken over, then let the resulting zombie company lurch onwards.
Might be hard to apply to an NFL team.
take over, hoover up all the finances to payoff the imaginary funders, then declare whatever stadium to be bankrupt and demand the locality pass more public funds to pillage
Sure, but it all depends on whether there are assets that can be rapidly spun off or borrowed against to rapidly repay the takeover investors while leaving the company a hollow shell. Team-intrinsic assets (player contracts, broadcasting rights, merch) seem a poor bet, but maybe the stadium etc?
Most (*) NFL teams don't own the stadium, the government does and they lease it.
They did the leveraged buyout trick first, except they did it better. They just got someone to *give* them land for ridiculously cheap.
*: many, at least