In this period, Xabi Alonso's Chelsea experienced a major personnel change on transfer deadline day. Midfielder Enzo Fernández was sold to Manchester City for £125 million after refusing to train and submitting transfer requests, reuniting with former Chelsea manager Enzo Maresca. Fernández claimed his relationship with teammates was irreparable, making this the sole but high-signal development of the window. Compared to the previous period's post-derby comments, the focus has shifted to internal turmoil and the loss of a key player.
- Enzo Fernández refused to train with Chelsea and submitted two written transfer requests before being sold to Manchester City for £125 million on deadline day.
- Fernández told Chelsea his relationship with teammates was irreparable and had been in private contact with former Chelsea manager Enzo Maresca, now at Manchester City.
- The deal places Fernández third on the all-time cumulative transfer fee list at €310 million.
- Chelsea rewarded Pedro Neto with a new contract for his loyalty.