NORMAN — Oklahoma and Nebraska have agreed “in principle” to a home-and-home series beginning in a game on Owen Field in 2021 — the 50th anniversary of the “Game of the Century” — the Omaha World-Herald reported Monday.

Nebraska athletic director Tom Osborne said the contracts aren’t signed yet, but that should just be a formality.

Sources told the newspaper that the first game would be played in 2021, with OU making a return trip to Lincoln, Neb., the next year.

The 1971 “Game of the Century” in Norman was won by Nebraska, 35-31. That year, Osborne was Nebraska’s offensive coordinator; Barry Switzer held the same position for Oklahoma.

Both Osborne and Switzer became head coaches at their respective schools in 1973, and went on to meet 17 times, with Switzer’s teams winning 12 of those contests.