Former Washington Redskins general manager Scot McCloughan has taken the next step in the grievance he filed this summer with the NFL over his firing, providing testimony under oath to lawyers representing the team during the discovery phase of the process.

The development was first reported by NBC Sports’s Mike Florio and was independently confirmed Sunday by two people familiar with the process.

The Redskins fired McCloughan “for cause” on March 9, two years and two months into a four-year contract, and asserted they were not obligated to pay his salary for the remaining 22 months of the deal. Shortly after the team-owned radio station speculated McCloughan was abusing alcohol, a team official, speaking on a condition of anonymity, told The Washington Post that the general manager was ousted because he had reported to work intoxicated.

McCloughan has countered that he was fired unjustly and is seeking the balance due on his contract, estimated to be as much as $2.6 million, via the NFL’s grievance process.

As part of the discovery phase, lawyers representing both the Redskins and McCloughan have exchanged affidavits regarding his tenure with the team. They have also exchanged lists of witnesses they would plan to call if the dispute isn’t settled during the discovery phase and goes to a hearing, two sources said Sunday.

Peter Harvey, a former New Jersey attorney general, has been appointed by NFL Commissioner Roger Goodell as the hearing officer, the sources confirmed.

The Redskins had no comment Sunday. McCloughan could not be reached for comment.

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