Source: Oklahoma D-line coach leaving, expected to go to Stanford

Apr 11, 2015; Norman, OK, USA; Oklahoma Sooners defensive line coach Diron Reynolds directs players during the spring football game at Gaylord Family Oklahoma Memorial Stadium. Red wins 20-7 over White. Mandatory Credit: Rob Ferguson-USA TODAY Sports

Diron Reynolds, Oklahoma's defensive line coach, is leaving OU, a source told FOX Sports. Reynolds is expected to become the new Stanford D-line coach, replacing Randy Hart, who retired earlier this week.

Reynolds spent a decade as an NFL assistant and worked under Hart at Stanford in 2014.

Bruce Feldman is a senior college football reporter and columnist for FOXSports.com and FS1. He is also a New York Times best-selling author. His latest book, "The QB: The Making of Modern Quarterbacks," came out in October 2014. Follow him on Twitter @BruceFeldmanCFB and Facebook.