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Sergio Aguero made 22 starts for Manchester City last season.
In the 2011/12 season, Manchester City scored 93 goals. The following term they scored just 66.
A deficit of 27 goals between the two seasons is huge. But what happened?
Sergio Aguero suffered an injury-hit season, starting just 22 games and scoring 12 top-flight goals over the course of the campaign. This is in stark contrast to the 23 that he notched in 2011/12.
Edin Dzeko and Carlos Tevez had underwhelming seasons and Mario Balotelli’s relationship with Roberto Mancini broke down to such an extent that the striker was sold to AC Milan in January.
Yaya Toure was also absent through international duty at the African Cup of Nations. And, at the other end of the pitch, key man Vincent Kompany had to sit out 11 games over the course of the season.
Such a wealthy club should have been able to provide cover for injuries, suspensions and absentees. Mancini seemed unable to cope without his top players.
Had City managed to sign Robin van Persie in the transfer window, things would have been very different. Instead, they brought in Scott Sinclair, Jack Rodwell, Javi Garcia and Matija Nastasic.
The solution? Pellegrini has already acted quickly in the transfer market, bringing in top names like Jesus Navas from Sevilla, Fernandinho from Shakhtar Donetsk and Alvaro Negredo, who looks poised to join from Sevilla as seen on the BBC Sport website. Stevan Jovetic is also rumoured to be on his way to the Etihad, according to this article from BBC Sport.