The NFL could soon allow private equity firms to buy significant team ownership stakes, Commissioner Roger Goodell said in an interview that kicked off the second full day of Allen & Co.'s "summer camp for billionaires" on Thursday. Goodell, one of dozens of moguls from the tech, media, business and sports worlds who gathered at the ritzy Sun Valley Conference, said the NFL was aiming to revamp its rules for team ownership by the end of the year.

"We've had a tremendous amount of interest [from private equity firms], and we believe this could make sense for us in a limited fashion, probably no more than 10% of a team," Goodell told CNBC. "That would be something we think could complement our ownership and support our ownership policies." 8 Roger Goodell said the NFL was open to allowing private equity firms to take team ownership stakes.

CNBC Buying an NFL team has become an increasingly expensive proposition in recent years, with all but the world's wealthiest individuals priced out of the process. Goodell said the 10% threshold could be raised over time if the league is satisfied with the move. The roster of attendees at this year's Sun Valley Conference included controversial Microsoft co-founder Bill Gates, who was photographed walking the resort's grounds with.

.. Thomas Barrabi.