For football clubs the most prominent and lucrative parts of their commercial arsenal are their shirt and sleeve sponsorships.
While front-of-shirt sponsorship deals have been the norm in English football since it was widely adopted from the early 1980s, sleeve sponsorship is something that is more recent, with the Premier League allowing clubs to seek commercial partners for their shirt sleeves since the beginning of the 2017/18 season.
Allowing sleeve sponsorships created another valuable revenue stream for clubs, particularly members of the so-called 'big six', whose sleeve sponsorship deals between them at present equate for 73 per cent of the total value of the Premier League sleeve deals combined.