The Buffalo Bills were expected to conduct a second interview Saturday night in Florida with former New York Jets coach Rex Ryan, league sources told ESPN NFL Insider Adam Schefter.

The Bills were expected to interview former Jets coach Rex Ryan for a second time Saturday night. Jeff Skopin/ESPN

Ryan's first interview with the Bills was Thursday. He is the first known candidate that the team has brought back for a second interview.

The Bills already have interviewed 12 candidates for their head-coaching vacancy, which opened last week when Doug Marrone opted out of his contract. Buffalo has also requested initial interviews with two other candidates -- New England Patriots offensive coordinator Josh McDaniels and Indianapolis Colts offensive coordinator Pep Hamilton -- who have yet to meet with the team.

Ryan, 52, also has interviewed with the Atlanta Falcons. He also was scheduled to meet with executives this week at CBS about a possible broadcasting job, according to a report from the New York Daily News.

Ryan was fired last month after six seasons with the Jets. He finished with a 46-50 record.