Williams was not spotted at the start of minicamp on Tuesday, NFL Network's Tom Pelissero reported from practice.
NFL Network Insider Ian Rapoport reports that Williams wants a new deal, per a source informed of the situation.
Williams signed a five-year, $66 million contract extension with the Redskins in 2015, with $30 million fully guaranteed, to put him under contract through the 2020 season. The veteran is set for a base salary of $11 million in 2019 and $12.5 million in 2020 in the final two years.
Since Williams signed his extension, the tackle market has continued to progress skyward. Williams' annual average salary of $13.2 million per year places him seventh among offensive tackles, behind Trent Brown ($16.5M), Taylor Lewan ($16M), Nate Solder ($15.5M) Jake Matthews ($14.5M), Donovan Smith ($13.75M), and Russell Okung ($13.25M), per Over The Cap.
Recent injury concerns the past several seasons could give the Redskins pause to extend Williams, despite his distinction as one of the most dominant blockers in the NFL. He's missed nine games the past two seasons due to various injuries. Rapoport previously reported that Williams had a health scare earlier this spring in which he had a growth removed from his head. He was expected to be medically ready for training camp.
Still just 30 years old, a healthy Williams remains one of the premier blindside blockers in the NFL and the seven-time Pro Bowler likely views the list of players getting paid more per year lesser caliber than himself. A Redskins offensive line without Williams would be a huge downgrade for whichever quarterback wins the offseason battle in Washington this summer.