With gambling firms dominating, BBC Sport looks at how and why football shirt sponsorship has changed over the decades.

Nowadays, none of the front-of-shirt sponsor companies are aiming to sell ... None of the Premier League's six wealthiest clubs - Arsenal, Chelsea, Liverpool, Manchester City, Manchester United ...

Arsenal can still cock up Liverpool’s Premier League title-winning plans as the Reds send more mails than the triumphant ...

Real Madrid's record-breaking manager Carlo Ancelotti had no complaints after his side's Champions League reign was ended in ...

Football Insider has learned Chelsea are well placed to agree a £50million shirt sponsor deal at Stamford Bridge.