Liverpool could theoretically mirror Man City’s owner-funded approach and sign an enormous £329m sponsor deal, the latest analysis shows. City and Liverpool have been engaged in a competitive rivalry in recent times, with Jurgen Klopp and Pep Guardiola contesting five of the last seven title races. It has been Arsenal who have pushed City closer in each of the last two seasons, but Liverpool’s renaissance under Klopp has been reflected in the club’s accounts financially. Owners Fenway Sports Group have seen revenue more than double in the last decade, from £256m in 2014 to an expected £600m-pl…