English centre-forward Kayden Jackson, 31, is in the final year of his contract at Pride Park and is free to leave the club in the summer. He has made 19 appearances in the Championship this season without scoring. Jackson has one cap and one goal for the England C national team. His current Transfermarkt market value is €200k. Recent reports have linked Milton Keynes Dons and Wycombe Wanderers with the player.