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After Manchester City were taken over by Sheikh Mansour and his incredible wealth in 2008 it was inevitable they would eventually pose a threat to their neighbours Manchester United.
By the 2011-12 season City had assembled a highly impressive squad that under Roberto Mancini put together a real challenge for the title.
On the final day of the season City simply needed to beat Queens Park Rangers at home to win the title, but as they entered injury time found themselves trailing 2-1.
This would mean United, who were winning 1-0 at Sunderland would take the title, and when their game ended at the Stadium of Light for a matter of minutes, they were indeed the champions-elect.
But back at the Etihad Stadium, late goals from Edin Dzeko and Sergio Aguero wrestled the title away from United in the Premier League’s most dramatic ever climax to a season.
The following season City put up a poor defence of their title and United, buoyed by the signing of Robin van Persie, reasserted their authority to win the title with an 11-point margin over their city rivals.