The Bosnian ace was expected to play a big role for the Sky Blues under new boss Manuel Pellegrini this season after a lengthy spell on the bench under former manager Roberto Mancini.
However, despite an early run in the starting XI he has now slipped out of favour thanks to the impressive form of Alvaro Negredo and Sergio Aguero – who is currently injured.
As a result, a winter move away from City has been mooted, with Milan keen.
The Serie A giants look set to offload Mario Balotelli – formerly a Citizens player – after growing frustrated with his on and off-field antics, and have made Dzeko a top target to replace him.
The ex-Wolfsburg man is seen as the ideal player to get AC’s disappointing campaign back on track, and help them to mount a serious challenge for European qualification.
‘Mad Mario’ could become the subject of serious Premier League interest in the coming weeks, with the forward still held in high regard in England.