Borussia Monchengladbach is reportedly monitoring Charalampos Kostoulas. The 17-year-old is considered the 'next big thing' in Greek football. Kostoulas' contract with Olympiacos runs until the summer of 2026. The striker, whose versatility allows him to play as an attacking midfielder and right-winger, has also caught the attention of Bayern Munich, Fiorentina, and Juventus. Olympiacos, however, reportedly have big plans for him and intend to offer a new contract once he turns 18 in May 2025.