Сен-Кантен
Gobert was born in Saint-Quentin, Aisne, in the north of France. Raised in his native town, Gobert started playing basketball in 2003 for the JSC St-Quentin club, before later joining the Saint-Quentin BB club. In 2007, he joined Cholet Basket's cadet categories training center and in 2010, he participated in the FIBA Europe Under-18 Championship with the French under-18 national team, where he finished as the team's best scorer and rebounder.