The 'tide turning' metaphor has become over-used since the Abu Dhabi Group made Manchester City one of the richest clubs in the world in 2008.
In the other half of Manchester things aren’t looking good for United, who where so comprehensively put to the sword at the weekend's derby fixture.
City famously beat United 6-1 at home two years ago, but Sunday’s beating of the champions may be more costly for United. City famously went on to win the title that year in such dramatic fashion, but with the advantage of hindsight, United threw it away more than City won it.
An out-of character, late season poor run of results saw United hand City the title on a silver platter – although they nearly contrived to throw it away themselves – cue Sergio Aguero.
When City beat United that season the margin was two goals greater and yes, it was at Old Trafford but United played the majority of that game with ten players after Jonny Evans was sent off for hauling down Mario Balotelli.
Three of City’s six goals also came after 90 minutes as United’s desperation to salvage something backfired in sensational fashion and they left themselves completely exposed at the back.
Despite the emphatic score line, United actually gave City a fight that game and ended up only being seconds away from winning the title that season.
What the nation witnessed yesterday was a far less-convincing display as United, who looked like a team of shadows, were completely out-classed and out-performed on every blade of grass at the Etihad. Even the most biased United fan would find it hard to argue otherwise.
The defeat that Manuel Pellegrini’s side dealt United could prove to be more costly than the 6-1 drubbing; after United lost that game, Sir Alex Ferguson described it as the “worst day of this life”, but there was always the sense United were at their most dangerous when wounded under Ferguson - they went on a nine game unbeaten run.
We are yet to see how a wounded United will fare under Moyes, but such a convincing, crushing defeat to such fierce rivals, at such an early point in his career as manager could prove incredibly detrimental to his overall credentials.
A new, post-Ferguson era of the Premier League is emerging, and it would seem United are no longer top of the food chain.
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