The 18-year-old will link up with his international teammates for their first match on 13 November where they make the trip to Finland in their first group match.
They then return to Denmark for two fixtures a few days later when they welcome the Faroe Islands on 16 November before they round of their matches when they take on France on 19 November.
Gustav has recently been a part of the Denmark Under-19 squad last month as the side travelled to Sligo for two fixtures with the Republic of Ireland Under-19s. Gustav helped the side to pick up two wins and he’ll be looking to continue that run as they enter the qualification stage for the European Championships next year.
The striker is currently on tour in Spain with Brentford B ahead of two fixtures, the first of which is against Albacete Under-19s on Tuesday 5 November before they then take on FC Cartagena on Thursday 7 November.