The Premier League has announced it will allow sponsorship on its teams' shirt-sleeves from next season, with clubs set to realise roughly a 20 per cent increase in advertising revenue from new deals available.

With previously only one central shirt sponsor permitted, is the Premier League stepping down a slippery slope?

Here we review how kit sponsorship deals have affected other countries' football leagues, as well as other prominent world sports. See if you can spot when a lot of sponsorship becomes too much sponsorship...