Cristiano Ronaldo, Neymar, Lionel Messi, David Beckham and Zlatan Ibrahimovic make up the top five highest earners. Combined, the quintet have a combined following of 700 million people.
Various brands have reached out to both players and managers to sponsor certain material, with many contracted to agreements to share images.
Football boots are a common item to be promoted by players, who are tied down to deals with the likes of Adidas and Nike.
In other cases, players and managers will advertise companies they are closely connected to.
Rangers manager Steven Gerrard has often used his Instagram page to raise the profile of Water firm Angel Revive, for whom he is a brand ambassador.