In February, defensive end Jason Hatcher questioned whether the Cowboys had a player who could keep everyone in the locker room accountable. Cowboys coach Jason Garrett responded by saying there was nothing wrong with the team's dynamic.
Working at the team's practice facility Friday, Lee said he would call out any issues that might arise among the players.
"If there's something that needs to be addressed I have no problem addressing it," Lee told the Dallas Morning News. "I think all my teammates realize that I have their back. I want to see them do the best.
"I want to see our team win a Super Bowl and be successful, so I have no problem stepping up and saying something if I find something that I feel is wrong."
After a second-year campaign in which he became a starter and led the team in tackles (105) and interceptions (four), Lee said his next step would be becoming a more vocal presence.
"I think playing more last year, being a guy that makes the calls in the huddle, I'm definitely going to have to step up from a leadership standpoint on the field and off the field," said Lee, who was sporting a red Texas Rangers hat. "I got a ton of great guys on the team right now to look up to. Guys like obviously Tony (Romo), Jason (Witten) and DeMarcus (Ware). So, there are a lot of guys that I'm looking up to and trying to be like, but at the same time, trying to become a better leader myself."