INDIANAPOLIS – Cincinnati Bengals coach Marvin Lewis said at the NFL combine Thursday that he and team president Mike Brown have not had conversations about extending his contract, which expires at the end of the 2015 season.

At last year's combine, Lewis acknowledged he and Brown had discussions about keeping him in Cincinnati. A month later, the team announced a one-year extension that allowed him to coach the 2014 and 2015 seasons.

Much as he did 12 months ago, Lewis said Thursday that his focus wasn't on getting a new deal.

"I don’t worry about my contract," Lewis said. "As I told you a year ago, my contract will take care of itself. It always does. It's not about me. It's about the football team. That's what's most important."

At last year's combine, in giving a reason for his lack of an extension, Lewis cited the dozen or so assistant coach hirings or re-signings the team had to make first. This year, he didn't say anything more than the comment above.

The second-longest tenured head coach in the NFL, the 56-year-old Lewis has led the Bengals since 2003.

Lewis joked at the Super Bowl about possibly vacating his post as early as next season. During a segment on ESPN’s "NFL Live," Lewis laughed as he brought up the possibility that Bengals assistant Vance Joseph might take his spot in the very near future.

"My boss and owner sees him as a star," Lewis said, "and a guy that, as I told Vance, he could be sitting in my chair very quickly.

"It could be next year."

Joseph, who has spent one season as the Bengals’ co-defensive backs coach, was courted earlier this offseason by the Broncos and 49ers for their defensive coordinator positions. He's viewed across the league as a rising star and is expected to be a head coach somewhere in coming years.