This publication has continued to report on the cases surrounding footballers around the world and their tax affairs.

Portuguese footballer Cristiano Ronaldo has used more offshore firms than previously thought for his tax arrangements, shining further light on alleged tax practices of professional sportsmen and women.

In June, this publication had reported that Ronaldo was accused of defrauding Spanish tax authorities of €14.7 million ($17.8 million) by hiding his income through image rights in June. He denied the accusations and threatened to leave Spain. 

Documents provided to Der Spiegel, the German publication, suggest that the Real Madrid footballer operated a holding in Luxembourg and a trust in Jersey in 2015. The striker is the sole beneficial owner of the structure and has not been accused of wrong doing.

Reports state that there is no mention of a Jersey trust in his tax declaration for 2015.

The German magazine also says that tax investigators from Spain, Britain, Ireland, Cyprus and the Netherlands are examining the affairs of the player's agent Jorge Mendes, who is also the agent of Jose Mourinho, who was also accused of tax fraud in Spain. Mourinho denied the accusations.

This publication has regularly reported on the image rights tax avoidance crackdown in Spain surrounding a host of big names in the world of football including Lionel Messi.

Most recently, in March, this publication reported that former Liverpool and Real Madrid footballer Xabi Alonso is facing a possible five-year jail term after Spanish authorities accused him of tax fraud. And also this week, WealthBriefing reported on the HMRC's crackdown of footballers' tax avoidance schemes.

The profusion of cases against sports, media and entertainment stars in recent years also raises questions about the duty of care that wealth managers and others owe to such persons, particularly in cases where clients are young and don't qualify under many regulatory rules as "sophisticated" investors.