Earlier this year Israel Folau, who was sacked by Australia Rugby for writing homophobic posts on social media, was signed by Rugby League side Catalan Dragons. The signing  caused plenty of outrage, with openly gay rugby star Gareth Thomas one of many people to criticise the decision of the Super League side. Folau’s move to the Perpignan-based club isn’t the only signing that has been met with widespread anger. We’ve taken a look back at some other controversial signings made in the world of sport.