北京時間10月5日，北京國安官方宣布主教練塞蒂恩下課。在雙方談妥相關事宜後。塞蒂恩也透過北京國安官方向外界發布了一封告別信。
塞蒂恩告別信
今天，由於我個人的一些原因，決定與北京國安足球俱樂部終止工作合同，這份合同本應該在本賽季結束到期。
我要向在這段時間裡所有為我工作提供幫助的朋友們表達謝意。
感謝所有的球隊工作人員，感謝過往數月里大家給予我的配合。
感謝所有的球員，感謝你們的奉獻和努力，在場上傳遞出了我對於比賽的熱情和追求。
更要感謝北京國安的董事長，因為你給了我一個來到中國執教的機會，尤其是能夠在中國最重要的足球俱樂部執教。
我也預祝這裡的所有同仁都能夠在未來獲得成功。
在遠方，我也將會以北京國安球迷的身份繼續關注和支持這支球隊，去慶祝大家的每一場勝利。
再見，向你們致敬。
（完）
告別信原文
Today I have reached an agreement with Beijing Gouan to terminate my contract, which was due to expire at the end of the season, for personal reasons.
I would like to thank all the people and staff with whom I have worked over the past few months for their cooperation,
the players for their commitment and dedication in bringing all my ideas to the pitch with enthusiasm and professionalism,
and the Chairman of Beijing Gouan for the opportunity he gave me to enjoy this new experience at China's most important club.
I wish them every success for the future, which I will celebrate from afar as just another fan.
Farewell.
