When, on 24 July, Turkey officially launched its first air strikes against IS, it also attacked Kurdish positions in northern Iraq.
Speaking to the BBC, Mr Bayik said negotiations were the “only choice” for an end to the Kurdish conflict.
He said the PKK would stop fighting if Turkey ended its military operation, and called for international monitors to oversee a ceasefire.
Turkish Prime Minister Ahmet Davutoglu has previously said that strikes against the PKK would continue until the group surrenders.
The country’s fight with the PKK is complicating the US-led war on the Islamic State group, for which the US has relied heavily on Syrian Kurdish fighters affiliated with Turkey’s Kurdish rebels. ∞∞∞∞∞ SEE MORE ∞∞∞∞∞