"You're either competing or you're not. And so we've always had to be open for everything, every suggestion that comes along," Carroll said. "There have been some teams that have called, and so we've talked about it. But he's extremely important to our football team.
"I don't see anything happening at all. And I don't see anything happening with any other players, just the banter that's out there right now. But it has been talked about. He's a great player and can impact another team. I can see why people would be interested in him."
In two days at the owners' meetings, the Seahawks have made it clear that they are willing to listen to offers for Sherman. General manager John Schneider shared the same message Tuesday.
Thursday morning, Sherman addressed the issue of a possible trade, telling 710 ESPN Seattle: "I wouldn't want to leave this city and my guys, but I understand it's a business, and organizational philosophies change."
Sherman had two sideline blowups last season that were directed at coaches. The first involved defensive coordinator Kris Richard after the defense gave up a big play in Week 6 against the Atlanta Falcons.
In Week 15, when the Seahawks attempted a pass play from the Los Angeles Rams' 1-yard line, Sherman went off on Carroll and offensive coordinator Darrell Bevell. Afterward, Sherman did not back down, referencing the team's Super Bowl XLIX loss in which Russell Wilson was intercepted in a similar situation.
Carroll acknowledged that the 2016 season was a challenge for Sherman.
"Richard went through a lot last year, most of it self-inflicted," Carroll said. "He got out there, and he was in the midst of a season that was really challenging for him. If you remember when he did have his issue, it was right in the midst of playing some great players week after week after week. He was teed up for it and jacked about it and all that. And he was competing like crazy. He was a fantastic battler.
"The only thing that happened is he just didn't come back to us. He didn't reset as he has. He's always found his way to reset. He kind of stayed on the edge throughout the season, which was very challenging for him to carry. He's a very capable guy at dealing with all of the issues that the league brings and offers for guys. And he's a guy that's always going to be out in front. That's where he should be. He's an exceptional football player and an exceptional young man. And it just was a challenge for him. So I'm hoping that things balance out more ... for him so that he doesn't have to carry an additional burden just trying to be one of the best players in the NFL that he is. So I'm expecting him to do a really good job. He always has. Sometimes the turnaround time just takes a little bit longer than others."
Sherman, 28, has two years remaining on his contract. He is due $11.431 million guaranteed in 2017 and $11 million in 2018. Sherman has never missed a game in his six-year NFL career and has made the Pro Bowl four seasons in a row.
Appearing on ESPN's First Take last week, Sherman addressed the idea of being traded.
"I just laugh it off, man," Sherman said. "It's funny to me. But sometimes people need to see you gone to realize what you had. The grass isn't always greener on the other side. But I don't let things like that bother me. The chips will fall how they're supposed to."