The Minnesota Vikings will play a home game at Wembley Stadium in London sometime in September next season, according to league sources.
The announcement is expected to be made at Tuesday's NFL owners meetings in Chicago.
It also could be the first of more Vikings home games in London, though the league still wants to see how this game with Minnesota works out before giving the team another home game in London in 2014 as part of the NFL's expanding International Series, according to the sources.
An NFL spokesman, however, said that no decision had been made yet on a possible second game in London next season.
But with the Vikings not moving into their new $975 million home stadium until the 2016 season, and with Minnesota not having a lease for its stadium for next season, the franchise has some flexibility as to where it can play. But for now, it has committed to playing in London in 2013.