Has to be a Barcelona Jersey biggest club in the world largest fan base makes sense. Improved Answer: No, It would be Real Madrid or Manchester United which are the two biggest soccer clubs.
Manchester united
Manchester United
chivas
Liverpool
Rangers
Fenerbahce SK
ATLETICO NACIONAL
Manchester united
Sure Besiktas - carsi
AIK Solna, Hammarby, Djurgården, Malmö, IFK Göteborg
None of them have offical fan clubs