Bob Stoops is reportedly retiring from coaching, effective Wednesday afternoon, per NewsOK.com.
Lincoln Riley is expected to take over for Stoops, per Bruce Feldman.
"The 33-year-old Riley won the Broyles Award as the nation's top assistant coach in 2015. The Texas native, who has spent seven seasons as an offensive coordinator, is the latest in a run of Sooner coaches who took over the program in their 30s.
Riley has passed on several FBS head coaching opportunities in recent years, including at Purdue, USF, Cincinnati and Houston. OU brass has been grooming him for this opportunity for over a year. Last fall, OU began working on an unprecedented three-year deal for an assistant."
Stoops spent 18 years in the top tier of college football with the Oklahoma Sooners.
Stoops is reportedly expected to remain with the school in some capacity.
During his tenure, the Sooners were 190-48, playing in a bowl game every season of his run. He led the Sooners to the 2000 National Championship after a 13-0 season.