The Seattle Seahawks still hold the rights to the retired back, and would either have to trade him or release him for Oakland to acquire him.
A new report from ESPN's Adam Schefter and Josina Anderson on Friday said that the Raiders are "strongly considering" trying to bring Lynch out of retirement, either through a trade or a release.
Pro Football Talk reported back in September that Lynch was "up in the air" about a potential NFL return.
A source told Mike Florio of ProFootballTalk that there is a "very good chance" that Lynch will end his retirement after one year.
Dortmund confirm Gotze out for the season
Dortmund CEO Hans-Joachim Watzke added: "BVB wishes Mario Gotze a quick recovery on behalf of his ten million fans". The long term target for the player is to be fully fit and ready to play for the start of next season.
In addition, there is the issue of what would be required, in order for Lynch to play for the Raiders. It's very similar to what took place during the 2016 National Football League season, as the Seahawks tried to find a good replacement in the running game.
Lynch, 31, is a Oakland native who attended Oakland Tech High School and starred in college at the University of California-Berkeley. "I'm done. I enjoyed my time playing and now it's time to watch my cousins do their thing", when asked by 60 Minutes Sports if he'd consider a comeback.
This past June Lynch said, "No, I'm done". He attended Oakland Technical High School, played college ball for the Cal Bears, and rumors have always been swirling in league circles about his desire to play for the Raiders. During Lynch's tenure with the Seattle Seahawks, which began in 2010, only Peterson had more rushing yards after contact.