Manuel Pellegrini believes based, on this season, that his Manchester City side's form has seen them usurp city rivals United as the top team in Manchester - but admits that their neighbours' past success cannot be ignored.
A potentially pivotal midweek round in the English Premier League sees disposed leaders Arsenal and struggling champions Manchester United aiming to rediscover form when the pair meet in North London.
Leaders Arsenal face a key challenge in their Premier League campaign on Saturday when they visit Manchester City at their Eastlands stronghold, while second-placed Liverpool travel to Tottenham seeking to gain ground.
Manuel Pellegrini says his Manchester City side have proven a thing or two after a stunning 3-2 victory ended a long unbeaten streak for Bayern Munich, despite the English club missing several key players.
Bayer Leverkusen and Olympiacos both secured berths on the last round of group stage matches in the UEFA Champions League, while Galatasaray and Juventus' crucial encounter was abandoned due to heavy snowfall.
James Milner has said new Manchester City manager Manuel Pellegrini has been teaching his new side the tactics that made Malaga such an effective force in last season's UEFA Champions League.