Sherman has told teammates goodbye over the last 24 hours and that he won't be on the team in 2018, sources tell NFL.com's Ian Rapoport.
Sherman, who won a Super Bowl with the team a few years back, is a four-time Pro Bowl player who led the National Football League in interceptions in 2013.
Carroll called Sherman's recent surgery a "minor" procedure, but he had his left foot in a boot, and his health status for the 2018 season remains uncertain.
Sherman, who has only ever played for the Seahawks since being drafted in the fifth round of the 2011 Draft, has since told ESPN nothing has been decided about his future. Lane implied that he'd gotten a text message about No. 25 - the number Sherman wears. "Kam Chancellor also posted what could be viewed as a tribute to Sherman, stating "'Chancellor of Operations' Thanks for the name" and tweeting at Sherman.
Sherman's a three-time first-team All-Pro and four-time Pro Bowl member but he's coming off a ruptured Achilles in 2017 and he turns 30 in late March. This is the final year of the four-year, $56 million contract he signed prior to the 2015 season.
In addition, the NFL Network's Tom Pelissero tweeted that Sherman will meet with Seahawks head coach Pete Carroll and GM John Schneider later on Wednesday to discuss his future. Belichick continued that Sherman has "great instincts, good hands and good ball skills".