By Simon Mullock Erik ten Hag has urged Manchester United to shut Pep Guardiola up by becoming the new noisy neighbours. Guardiola insisted before Manchester City ’s 3-0 derby romp at Old Trafford in October that Liverpool had taken over from United as the Blues’ biggest rivals – and Ten Hag has admitted he was right to do so. But the United boss has now challenged his team to seize the chance to take back local bragging rights when they face last season’s Treble winners at the Etihad – and to show new co-owner Sir Jim Ratcliffe that the Reds can knock City off their perch. Ten Hag said: “For …