The owner/chairman took a huge gamble when they sacked Mancini. He wasn't and isn't and probably never will be an A list manager but it worked for City in no small part down to the fact that Cook/Marwood whoever brought in some very good players, Yaya, VK, Zabba, Tevez, de Jong, Silva, Kun despite the fact that we had no silverware to show for the last however many years
Despite winning the PL twice we have purchased far inferior players since and some areas notably FB have been criminally neglected.