In a touching farewell shared via Instagram, Madueke addressed the club, teammates, coaching staff and supporters with sincere appreciation.
He wrote on Instagram: "Dear Chelsea Football Club, I want to thank you for the Last 3 or so years. To every staff member that helped me along this journey, thank you. To my teammates thank you for everything, I leave with only love and admiration for you guys.
"We achieved so much this season and I honestly wish you guys nothing but the best. To Enzo Maresca, it was a privilege to play under you, thank you for trying to better me as a player and as a person. Lastly thank you to every single Chelsea fan. Thank you for the love, the praise and also the criticism, I appreciate it all. I leave here with nothing but fond memories. Love NM11."