The train of 2024 is about to reach its destination, while the flight of 2025 is ready to take off. Players from various Chinese Super League (CSL) teams who are free agents are preparing to disembark, bidding farewell to the train they've ridden for a season as they head to their next destination. Beijing Guoan has become the first team to change coaches during this offseason, with Spanish coach Quique Setién taking over half a month ago. However, he has yet to join the team and will only arrive in Haikou for the second phase of winter training. Former Beijing Guoan foreign aid player Jonathan Viera, once a favorite of Setién, may return to the team during the winter window, and there may have been contact between the two parties. In addition, Beijing Guoan is in contact with Yan Dinghao from Chengdu Rongcheng, Yuan Mincheng from Changchun Yatai, and overseas Chinese player Liao Yangyang. The naturalization process of the soon-to-be-joined Serginho is also progressing steadily. Naturally, with new signings come departures; Setién plans to abandon the dual foreign center-back combination, meaning one of Mamadou or Engadu will leave. Duan Dezheng may go to Yunnan Yulong, Zhang Chengdong is expected to join Qingdao West Coast, and Li Ke has been rumored to be joining Chengdu Rongcheng. Previously rumored to possibly join Shenzhen Xinpengcheng, young overseas player Wu Shaocong is now also associated with Beijing Guoan. Alan joined Qingdao West Coast at the beginning of the season, but Li Ke was called up by the national team and missed several World Cup…