Negotiations are currently underway for a permanent transfer of 21-year-old Belgian central midfielder Joseph Nonge with Kocaelispor in Süper Lig. Joseph Nonge has already reached an agreement on personal terms with Stade Brestois. He joined the Turkish club in July 2025 and is under contract until 2028. In the 2025/2026 Süper Lig season, he made 25 appearances. Nonge has been capped four times for the Belgium U21 national team, and his current market value is estimated by Transfermarkt to be €2.00m.