But which English top-flight side sells the most replica shirts to its fans per year?
Here, using data revealed by industry insider Dr Peter Rohlmann and his team at the consulting bureau, PR Marketing, we count down the top Premier League clubs in terms of shirt sales.
The figures are based on sales during a five-season period from 2011-12 to 2015-16 inclusive.
Click below to begin the slideshow.
Watford are first on the list, selling around 10,000 replica shirts per year.
The Hornets are one of three Premier League clubs tied on sales of around 10,000 replica shirts per season.
Next, can you guess which top-flight club is on the same level?