Ole Gunnar Solskjaer knows Manchester United need to rediscover their spark if they are to stop relentless Premier League leaders Manchester City extending their eye-watering advantage in Sunday's derby.
Having been knocked off top spot by Pep Guardiola's men on January 26, their fortunes have contrasted to such an extent that the Red Devils sit 14 points behind their rivals heading to the Etihad Stadium.
United's title challenge has been all but ended by winning just two of eight top-flight matches during that period, with Wednesday's lifeless 0-0 draw at Crystal Palace the latest frustrating result.