
Turan, who is this season playing for Istanbul side Başakşehir while on loan from Barcelona, was summoned to give a statement to Istanbul police over the fight with singer Berkay Şahin, state-run news agency Anadolu reported.
The Hürriyet daily said police would then await instructions by prosecutors over whether to keep him detained or set him free.
Turkish media said that Turan became involved in the fight earlier this week with Şahin outside a nightclub in Istanbul that ended with the singer’s nose broken.
In a bizarre sequence of events, Turan then went to the hospital where the singer was being treated clutching a gun and begging to be shot and forgiven, the Habertürk daily said.
The attacking midfielder has for years been Turkey’s best-known footballer, but he has become notorious for poor behaviour both on and off the field.
He was banned for a record 16 games by the Turkish football authorities in May after he shoved and verbally abused a referee in a game for Başakşehir.
Turan had joined Başakşehir last season on loan from Barcelona, where he had largely endured an unhappy spell on the bench after joining from Atlético Madrid.