After squandering a 25-point lead in the Super Bowl, the Atlanta Falcons are shaking up their defensive staff.

The team said Wednesday coach Dan Quinn dismissed coordinator Richard Smith and line coach Bryan Cox, though there’s a chance Smith could stay with the Falcons in an advisory role.

The changes mean the NFC champions will have two new coordinators next season. Kyle Shanahan left to become head coach of the San Francisco 49ers and was replaced as offensive coordinator by Steve Sarkisian.

Also, the Falcons promoted Keith Carter to running backs coach with Bobby Turner reportedly leaving to join Shanahan’s staff in San Francisco. In addition, they will need a new quarterbacks coach; Matt La­Fleur is expected to be named offensive coordinator of the Los Angeles Rams.

Smith will likely be replaced by a coach already on staff. The Falcons are considering defensive backs coach Marquand Manuel, linebackers coach Jeff Ulbrich, and defensive passing game coordinator Jerome Henderson.

Manuel interviewed for the defensive coordinator post in Jacksonville last season.

The 61-year-old Smith served as defensive coordinator during Quinn’s first two seasons in Atlanta, after previously working as a linebackers coach in Denver. He has more than a quarter-century of NFL coaching experience.

Eagles cut McKelvin

The Eagles released cornerback Leodis McKelvin, saving $3.2 million in salary cap space.

McKelvin started 12 games in his only season in Philadelphia. He had two interceptions, including one returned 29 yards for a touchdown.

McKelvin was a first-round pick by Buffalo in 2008 and spent his first eight seasons with the Bills before signing a two-year contract with the Eagles last March.

Nolan Carroll, the team’s other starting cornerback, will be a free agent.

The Eagles had $7.2 million available under the salary cap before McKelvin was cut on Wednesday. Other veterans could be released before the NFL’s free agency period next month.