Ken Belson of the New York Times, citing two people with direct knowledge of the situation, reports that Cowboys owner Jerry Jones has hired high-profile lawyer, David Boies, in an attempt to block a new extension for commissioner Roger Goodell.

According to Belson, Jones is threatening to sue the league and some fellow team owners over negotiations to extend Goodell’s contract.

Jones told the six owners on the compensation committee last week that legal papers were drawn up and would be served this Friday if the committee did not scrap its plans to extend Goodell’s contract. Although, as of today, Jones has yet to file a lawsuit.

Reports have said for months now that Jones was attempting to block a new deal for Goodell, but hiring lawyer is a clear indication of him looking to escalate the situation.

Jones is reportedly upset over Goodell’s decision to suspend Cowboys RB Ezekiel Elliott six games, among other issues including the national anthem protests.

A few weeks ago, Adam Schefter and Chris Mortensen of ESPN reported that 17 NFL owners including Jones had a conference call Thursday and discussed the possibility of halting Goodell’s pending contract extension.