Sitting fifth in Group C, Turkey are unable to qualify but will hope to take momentum into the next qualification campaign which gets underway in the autumn of 2021.
Their final two games are both at the Samsun 19 Mayıs Stadium, Samsun, against Austria on Friday 13 November, kick-off 5pm UK time, and Kosovo the following Tuesday, 17 November, kick-off 4pm UK time.
Halil is Turkey's top scorer this campaign with three goals in seven games. In total at Under-21 level, Halil has scored four times in nine outings to add to two caps at Under-19 level.
The 20-year-old striker is currently on loan from The Bees at Eredivisie side FC Twente. He has played four times off the bench so far as Twente sit seventh in the Dutch top flight.