Frenetic derby was just the place for the interim manager to roll out Ferguson’s old ‘use the energy of the people’ dictum Frenetic derby was just the place for the interim manager to roll out Ferguson’s old ‘use the energy of the people’ dictum For Manchester United’s executives, City are the best-in-class runaway train they wish to emulate and aspire to. Coveted talent like Antoine Semenyo and now Marc Guéhi opt for blue when a generation ago, Old Trafford was the destination of dreams.