9) Kasey Keller (Millwall, Leicester City, Rayo Vallecano, Tottenham, Southampton, Borussia Monchengladbach, Fulham)
The long-serving goalkeeper began his European adventure with Millwall, for whom he played between 1992 and 1996. Continued his English adventure with Leicester, Tottenham, Southampton and Fulham, while also starring in Spain and Germany.