The Italian recently took control of Turkish giants Galatasaray and is already planning for additions this winter.
One man he is believed to have made a priority is Kolarov.
The Serbian was brought to the Etihad Stadium under Mancini, who is known to be a fan of his abilities.
The 27-year-old is thought to be considering his future at City as he enters the final 18 months of his current contract.
The emergence of Gael Clichy has seen Kolarov’s first-team opportunities limited, and he is said to be ready to leave.
Mancini is ready to spend £5m on the Eastern European, who cost the Citizens £19m in 2010.
Juventus are also keen, but the player’s relationship with his former coach could be key.
Mancini is thought to have around £30m to spend at Gala, with the club keen to compete with Europe’s top sides.
The Istanbul-based outfit are also believed to be competing with Arsenal for Real Madrid forward Karim Benzema.
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