Johnson had the most productive season of his career in 2013, his first with the Titans. He appeared in 16 games for just the second time in six seasons, finishing with 22 tackles and three sacks.
Woods is coming off the most productive season of his career, as he played in all 16 games for the first time in four seasons. He picked up 16 tackles and two sacks, the latter of which represents a career-high for the 26-year-old.
The 25-year-old free agent made the Pro Bowl after intercepting five passes and defending 23 more.
Re-signing free agent cornerback
Verner says he'd like to return to Tennessee but isn't afraid to test the market.
"We're going to have to rein him in a little bit, not from the standpoint of trying to get better, but he probably wants to go right now - just in my sense to talking with him," Whisenhunt told The Tennesseean. "But Jake has to be healthy. We want him to be 100 percent. ... There will be plenty of time to get him on the field."
Locker played in just seven games in 2013 and struggled after a strong start. He completed 61 percent of his passes for 1,256 yards, eight touchdowns and four interceptions.