As the Titans cleaned out their lockers, Mettenberger was asked what he would tell the team in an exit interview.
"I'm going to tell them I'm the guy," he said.
Mettenberger missed the final three games of the season with a sprained throwing shoulder and didn't guide the Titans to a win in six starts.
He expressed a similar sentiment twice before in the last three weeks.
The sixth-round pick out of LSU completed 59.8 percent of his passes for 1,412 yards and 7.89 yards per attempt with eight touchdowns, seven interceptions and an 83.4 passer rating.
Coach Ken Whisenhunt said the team will assess Mettenberger's work and come to a decision on what to do at quarterback.
"It's an important decision for us, for the organization going forward," he said. "We have time to make that decision. We're going to go through that process and look at it, I'm sure in time we'll come to the right one."
"I proved to myself I can play in this league and I can play well," Mettenberger said. "The biggest thing is just to continue to work to be more consistent."