European League of Football to add Madrid team in 2024 - Sportcal
NFL views Spain as likely next European city to host a game, being assessed for 2024
NFL Germany: Dusseldorf, Frankfurt and Munich named as three finalist cities in search for host partner, NFL News
NFL playing in Spain or France 'very much on our radar' after London and Munich games
Why the Panthers are opening door to German market
American Football in Europe
Rhein fire Nfl europe, World football, Football uniforms
The NFL Returns to the Raucous German Fan Base It Left Behind - The Ringer
The rising popularity of American Football in Germany – GermanyinUSA
Europe NFL matches yield $40 million per game - La Prensa Latina Media
NFL Europe 2004, Frankfurt; Frankfurt Galaxy - Duesseldorf Rhein News Photo - Getty Images