According to Schefter, the Titans put in the request Monday to interview Caldwell. This would mark the third reported interview for Caldwell this offseason.
Caldwell met with the Washington Redskins on Sunday and spoke with the Detroit Lions on Friday. San Diego Chargers offensive coordinator Ken Whisenhunt is considered the front-runner for the Lions' vacancy, sources told Schefter over the weekend.
The Titans' head coaching job became available when the team fired Mike Munchak on Saturday. Tennessee already has plans to interview Whisenhunt, Bengals offensive coordinator Jay Gruden and Bengals defensive coordinator Mike Zimmer.
Caldwell joined the Ravens as their quarterbacks coach in 2012 after he spent three seasons as the head coach of the Indianapolis Colts (2009-2011). He took over for Cam Cameron as the team's offensive coordinator with three games remaining last season and helped the Ravens' offense during an impressive Super Bowl run.
But, in his first full season as the Ravens' playcaller, the Ravens offense finished 29th in total yards and averaged 20 points per game, eighth-fewest in the league. If Caldwell would get one of these head coaching jobs, it is believed that Ravens secondary coach Teryl Austin would become his defensive coordinator.