Chelsea had already completed so many deals in the summer transfer window, yet plenty more business needed to be done on deadline day.
The Blues had to resolve the futures of several first-team and academy players and kept a close eye on potential new signings.
Enzo Maresca now knows the squad he will have for at least the first part of the 2025/26 season until the January window opens.
The Chelsea Chronicle looks at every incoming and outgoing deal that the West London club confirmed on deadline day.

Chelsea incomings on transfer deadline day
- Facundo Buonanotte (Loan from Brighton)
- Marc Guiu (Recalled from Sunderland)
Chelsea recalled Marc Guiu from his loan at Sunderland and signed Facundo Buonanotte on loan from Brighton on deadline day.
Chelsea outgoings on transfer deadline day
- Ben Chilwell (Undisclosed to Strasbourg)
- Donnell McNeilly (Undisclosed to Nottingham Forest)
- Alex Matos (Undisclosed to Sheffield United)
- Nicolas Jackson (Loan to Bayern Munich)
- Omari Kellyman (Loan to Cardiff City)
- Jimmy-Jay Morgan (Loan to Peterborough United)
- Ronnie Stutter (Loan to Barnet)
Ben Chilwell departed Stamford Bridge for sister club Strasbourg on a permanent deal, while several youngsters secured loan moves.
Every Chelsea signing in the summer transfer window
- Joao Pedro (£60m from Brighton)
- Jamie Gittens (£48.5m from Borussia Dortmund)
- Alejandro Garnacho (£40m from Manchester United)
- Jorrel Hato (£37m from Ajax)
- Liam Delap (£30m from Ipswich)
- Estevao Willian (£29m from Palmeiras)
- Dario Essugo (£18.5m from Sporting)
- Kendry Paez (£17m from Independiente del Valle)
- Mamadou Sarr (£12m from Strasbourg)
- Jesse Derry (Undisclosed from Crystal Palace)
- Kian Best (Free from Preston)
- Facundo Buonanotte (Loan from Brighton)
- Marc Guiu (Recalled from Sunderland)
Every Chelsea departure in the summer transfer window
- Noni Madueke (£53m to Arsenal)
- Joao Felix (£43m to Al Nassr)
- Christopher Nkunku (£36m to AC Milan)
- Renato Veiga (£26m to Villarreal)
- Djordje Petrovic (£25m to Bournemouth)
- Kiernan Dewsbury-Hall (£25m to Everton)
- Carney Chukwuemeka (£24m to Borussia Dortmund)
- Lesley Ugochukwu (£20m to Burnley)
- Armando Broja (£20m to Burnley)
- Bashir Humphreys (£15m to Burnley)
- Mathis Amougou (£12.5m to Strasbourg)
- Ishe Samuels-Smith (£5m to Strasbourg)
- Kepa Arrizabalaga (£5m to Arsenal)
- Alfie Gilchrist (£2m to West Brom)
- Marcus Bettinelli (£2m to Manchester City)
- Ben Chilwell (Undisclosed to Strasbourg)
- Donnell McNeilly (Undisclosed to Nottingham Forest)
- Alex Matos (Undisclosed to Sheffield United)
- Zak Sturge (Undisclosed to Millwall)
- Mamadou Sarr (Loan to Strasbourg)
- Mike Penders (Loan to Strasbourg)
- Kendry Paez (Loan to Strasbourg)
- Aaron Anselmino (Loan to Borussia Dortmund)
- Marc Guiu (Loan to Sunderland)
- Leo Castledine (Loan to Huddersfield Town)
- Teddy Sharman-Lowe (Loan to Bolton Wanderers)
- Brodi Hughes (Loan to AFC Wimbledon)
- Omari Kellyman (Loan to Cardiff City)
- Jimmy-Jay Morgan (Loan to Peterborough United)
- Nicolas Jackson (Loan to Bayern Munich)
- Ronnie Stutter (Loan to Barnet)
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