The New York Times' Ken Belson had originally reported Goodell was fining Jones, but NFL Network's Ian Rapoport clarified the punishment represented a "reimbursement of costs incurred by member clubs."
According to ESPN's Dan Graziano, the fees were connected to the money the NFL spent preparing for a potential lawsuit from Jones, as well as the financial expenditures that resulted from the various legal defenses of Cowboys running back Ezekiel Elliott's six-game suspension.
Jones had attempted to stall the ongoing negotiations between Goodell and the NFL's compensation committee over an extension for the commissioner. According to Belson, Jones even took the step of hiring attorney David Boies in preparation for a possible lawsuit to halt the negotiations.
ESPN.com's Don Van Natta Jr. and Seth Wickersham reported Jones hoped to replace Goodell with a successor of his choosing, though it was unclear whom Jones had identified as Goodell's replacement.
Belson reported in December that Goodell signed a five-year extension worth $4 million guaranteed annually with bonuses that could increase his total earnings to $200 million over the life of the deal.