A source told Werder that Lynch and the Raiders are working on a short-term, heavily incentivized contract, while a source told ESPN's Josina Anderson that Lynch is seeking more than the Raiders' current offer.
Lynch, who retired after the 2015 season, was born and raised in Oakland. The Raiders will play therefor at least the next two seasons before moving to Las Vegas.
The Seattle Seahawks still hold Lynch's contractual rights, but they allowed him to visit the Raiders last week. ESPN's Adam Schefter reported last week that a deal between the Raiders and Lynch "eventually will happen."
The Raiders can trade with the Seahawks for Lynch's rights before he is formally reinstated, a source told Werder. However, Lynch would be required to be fully reinstated as soon as a new contract is executed.
Seahawks general manager John Schneider, asked about the situation during an appearance last week on 710 ESPN Seattle, confirmed that the Seahawks and Raiders have had talks regarding Lynch.
Lynch will turn 31 on April 22. He has rushed for 9,112 yards and 74 touchdowns in nine NFL seasons, though injury limited him to seven games in 2015, when he averaged 3.8 yards per carry. He last played on Jan. 17, 2016, in a postseason loss to the Carolina Panthers.
The Raiders are in need of a big lead back after Latavius Murray left for the Minnesota Vikings in free agency. Jalen Richard and DeAndre Washington, both 5-foot-8, are entering their second seasons. Lynch is 5-11.
ESPN's Paul Gutierrez contributed to this report.
Odds Lynch and Sherman would play together again?
Ed Werder explains that during Marshawn Lynch's reinstatement process, he patiently waited to see where Richard Sherman would go with hopes to play alongside his former teammate.