Merchandising: Manchester United and Real Madrid on top (1.4 million shirts sold per year)
Manchester United (Premier League, ENG) and Real Madrid (La Liga, ESP) sell the most shirts on average, with 1.4 million sold per season. Though sales are thought to fluctuate based on team results and titles won, the largest European clubs tend to have relatively stable sales every year.
FC Barcelona (La Liga) are in third place for shirts sold...
