Could Lions DC Aaron Glenn be headed back to Saints?

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From New Orleans to Detroit ... back to New Orleans? Don't rule it out for Lions defensive coordinator Aaron Glenn.

After Sean Payton stepped down Tuesday as head coach of the Saints, Glenn is expected to interview for the job with his former team, where he spent five seasons as defensive backs coach prior to following Dan Campbell to Detroit last offseason. Glenn also played for New Orleans in the final season of his career.

That said, Saints defensive coordinator Dennis Allen, who's been with the team since 2015, is 'considered the leading candidate' to replace Payton, per Ian Rapoport.

Glenn, 49, has been a rising name in the coaching ranks for the past couple years. He interviewed with the Jets for their head coaching vacancy last offseason and interviewed this year for the Broncos job, though he's not one of the finalists in Denver.

Detroit's defense ranked 29th in the NFL this season, but Glenn got the most out of a severely undermanned unit down the stretch. The Lions held five of their final nine opponents to 20 points or fewer. To a man, Glenn's players love him. He's passionate and smart and commands respect as a former three-time Pro Bowl corner.

Glenn is destined for a head coaching job eventually, maybe as soon as this offseason. A reunion with the Saints would make sense. But with Allen ahead of him in line in New Orleans, Glenn likely stays in Detroit for at least another year.