Unal has nine goals and two assists in 11 appearances for NAC in the league this season including five goals and two assists in his last four games.
The 18-year-old striker has helped propel his side into third place and almost guarantee a spot in the play-offs for promotion to the Eredivisie.
The Turkish international striker joined NAC in January after an unsuccessful spell on loan at Belgian side Genk.
The promising striker joined Manchester City on a a £2,000,000 move last summer but was unable to play in England due to lacking the necessary work permit.
In 2013, aged 16, the City wonder-kid became the youngest player to score in the Turkish top flight scoring against Galatasaray and he had a terrific record and youth and international youth level.