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Roberto Mancini is considering going back to Manchester City to try to sign Matija Nastasic.

Galatasaray boss Mancini, who made City champions in 2012, gave Nastasic his debut at the club and believes the young defender may soon be surplus to requirements at Manchester's Blues.

Big-spending City remain keen on Porto and France defender Eliaquim Mangala, after trying to buy him last month.

Mancini's successor, Manuel Pellegrini, may be ready to shake up his defence with England centre-back Joleon Lescott set to go in the summer when his contract expires.

That could open the door for Mancini, with the Turkish press reporting Istanbul giants Galatasaray will make a move for Nastasic this summer if given any encouragement.

The 20-year-old Serbia international was signed by Mancini from Italy's Fiorentina in August 2012, and has since totted up a half-century of appearances for City.