Bruma’s agent Marco Kirdemir has blamed Cesare Prandelli for his clients lack of playing time.
The Portugal U20 international made six assists in 15 appearances last season for Galatasaray under Roberto Mancini.
However, Bruma has struggled for playing time under Cesare Prandelli, who was appointed in Mancini’s place during the summer.
The 20-year-old winger has only made seven starts in all competitions this season.
Speaking to Area Napoli, Bruma’s agent Kirdemir said, “It wasn’t like this when Mancini was the manager. He (Bruma) is ready for a new challenge.
“Inter and Napoli have not made an official bid.
“He is ready to leave the club in January but ultimately it is up to Galatasaray.”
Premier League sides Sunderland and Everton have also been closely linked with Bruma in recent weeks.
The Istanbul giants signed the Portuguese winger form Sporting for €10 million in January 2013.