Manchester City have launched a fresh legal challenge to the Premier League's rules on sponsorship deals – in a further escalation of the war between the competition and its champions.
Mail Sport understands that, in the latest bombshell development, lawyers for the club have informed the league that they will seek an arbitration hearing over amendments made to associated party transaction (APT) regulations which have already been at the centre of a long-running legal battle.
City scored a victory over the competition when an arbitration panel found elements of rules on deals with parties linked to clubs were 'unlawful'.