Justin Diehl is a 21-year-old winger of German and Ghanaian nationality and is under contract with VfB Stuttgart until 2029. According to Bild, Diehl is seeking a loan move to the 2. Bundesliga or abroad to gain more self-confidence and earn a future spot with the VfB first team. The publication further reports that two clubs have shown interest in the German U20 international, with Hannover 96 and 1. FC Magdeburg both expressing a desire for a collaboration. Diehl joined Stuttgart in July 2024 and had 3 goals and 4 assists in 21 appearances in the 3. Liga during the 2025/2026 season. His current Transfermarkt valuation is €1.20m.