Marvin Lewis may be finishing his career in Cincinnati. (Gary Landers / Associated Press)

After a 15-year run marked by regular-season success and postseason disappointment, Cincinnati Bengals Coach Marvin Lewis reportedly will step down when this season ends.

Lewis, ESPN’s Adam Schefter reports, is departing to “pursue opportunities elsewhere.” That would seem to indicate that he’s the only one who is ready to move on, despite a 5-8 record going into Sunday that has led to reports he is on the hot seat with a frugal team that does not make coaching changes easily. Although ESPN reports that he is willing to leave Cincinnati, the NFL Network reported that he would move into the Bengals’ front office.

Lewis has struggled with two straight losing seasons and has not won a playoff game, although he helped the Bengals turn things around soon after he arrived. Lewis, according to ESPN, is also unhappy over how his assistant coaches have been treated financially by owner Mike Brown.

The Bengals would be the second team to be seeking a coach for 2018. The New York Giants fired Ben McAdoo earlier this month.

Read more from The Post:

NFL Week 15: Aaron Rodgers returns, the Patriots and Steelers collide, Chargers stumble against Chiefs

‘The demons’ are always a breath away: Larry Johnson, convinced he has CTE, battles self-destructive impulses

NFL owners are paying Roger Goodell with a contract extension, but are they really behind him?

Robert Griffin III says he turned down offers from two NFL teams before the season

Lorenzen Wright’s ex-wife charged with murder in his 2010 slaying