London mayor Boris Johnson has spoken with league officials about hosting regular-season games at the city's Olympic Stadium, which is set to reopen in 2014.
Johnson is chairman of the London Legacy Development Corporation, which oversees the arena.
Talks with league officials were described by a mayor's spokesman as "exploratory," according to the BBC. Wembley holds rights to the NFL until 2017 after signing an exclusive five-year deal with the league.
London has become the home base of international play, and it's no surprise Wembley has competition for the role of host.