Marshawn Lynch is at least considering an NFL return, Seattle Seahawks head coach Pete Carroll confirmed Wednesday.

Carroll said he spoke with the running back roughly 10 days ago but said he couldn't say how serious Lynch is about a return.

"He came through the office and had a good visit," Carroll told ESPN on Wednesday. "I know that he is somewhat entertaining the thought of it. I can't tell you how strong it is. You've got to talk to him. And that chance isn't happening."

ESPN's Adam Schefter reported earlier this month the Oakland Raiders are "strongly considering" acquiring Lynch by a trade with the Seahawks or signing him after his release.

The Seahawks still own Lynch's rights since he walked away after the 2015 season with two years remaining on his contract. Carroll said he didn't know whether the Seahawks would release or trade Lynch should he comeback.

Lynch last played on Jan. 17, 2016 in a playoff game against the Carolina Panthers. He rushed for 417 yards on 111 carries - a 3.1 yards per carry average - in an injury-plagued 2015 season.

"I don't know," Carroll said when asked if Lynch could still be effective. "It depends on how he's approached this offseason. He looked OK. The mentality that it takes to play this game the way he plays this game, he has to really be invested and ready because he goes deep when he plays. Whether or not that's still in him, the burn is still there, I couldn't tell that from talking to him. I know that he was playing with the idea."

The 30-year-old cracked the 1,000-yard mark in four consecutive seasons with the Seahawks from 2011-2014.

Lynch is from Oakland and spent his college career at the University of California, Berkeley.

He will turn 31 on April 22.