Source: Calais Campbell reuniting with Ravens for 19th season

OWINGS MILLS, Md. -- Six-time Pro Bowl defensive lineman Calais Campbell is reuniting with the Baltimore Ravens.

Campbell is returning to sign a one-year deal with the Ravens, a source told ESPN's Adam Schefter on Thursday. This will mark the 19th season for Campbell, who will turn 40 on Sept. 1.

Baltimore is bringing back Campbell because interior defensive line was among the thinnest positions on the team after the draft. Though Pro Bowl defensive tackle Nnamdi Madubuike might come back from neck surgery, the only Ravens defensive linemen currently available who played more than 100 snaps last season are Travis Jones, John Jenkins and CJ Okoye.