RENTON, Wash. -- Seattle running back Marshawn Lynch did not attend any the Seahawks organized team activities after also skipping them last year, and the initial thought was that doing so again was simply business as usual.

However, reports this week indicated Lynch would like a new contract and might also skip next week's mandatory mini-camp.

Seattle coaches and team officials had no comment on Lynch, and indications are that Lynch has not told the team anything. He has two years remaining on a four-year deal signed in 2012 that would pay him $5 million this year and $5.5 million next year in base salary.

Lynch's contract, worth up to $31 million overall and $18 million guaranteed, carries salary cap hits of $7 million in 2014 and $9 million in 2015. And according to overthecap.com, Lynch is the fifth-highest paid running back in the NFL with a $7.5 million per year average on his current deal.

There has been widespread speculation that the high cap number in 2015 could mean the team might release Lynch, or seek to restructure his deal, after the 2014 season as he turned 28 in April, an age when tailbacks often begin to decline.

--The Seahawks signed 12-year veteran defensive tackle Kevin Williams on Thursday to add experienced depth up front.

Williams played the last 11 years with the Vikings, making it to six Pro Bowls, and played more than 700 snaps for Minnesota last season -- more than any Seattle linemen, as the Seahawks used a seven-man rotation that kept everyone fresh.

Williams projects to play both defensive tackle spots.

--Rookie wide reciever Paul Richardson sat out the last week of OTAs after sustaining a shoulder injury. It is not considered serious and he should be available for mini-camp. A second-round pick, he was Seattle's first selection in the 2014 draft.