| Date | Player | Type | From | Fee | Comment | |
|---|---|---|---|---|---|---|
| 01 Sep 2026 | Melvin Bard | Loan | OGC Nice | Season loan | ||
| 01 Sep 2026 | Jean-Mattéo Bahoya | Loan | Eintracht Frankfurt | Season loan | ||
| 29 Aug 2026 | Michael Zetterer | Transfer | Eintracht Frankfurt | 4,200,000 | Reported fee | |
| 21 Aug 2026 | Ditmar Hodja | Transfer | FK Rabotnicki | Undisclosed | ||
| 19 Aug 2026 | Nico Elvedi | Transfer | Borussia Monchengladbach | 8,500,000 | Reported fee | |
| 06 Aug 2026 | James Trafford | Transfer | Manchester City | 40,000,000 | To £45million maximum | |
| 17 Jul 2026 | Tarik Muharemović | Transfer | Sassuolo | 34,100,000 | Reported fee | |
| 08 Jul 2026 | Harry Wilson | Transfer | Fulham | Free |
| Date | Player | Type | To | Fee | Comment | |
|---|---|---|---|---|---|---|
| 01 Sep 2026 | Wilfried Gnonto | Loan | Fiorentina | Season loan | ||
| 29 Aug 2026 | Lucas Perri | Loan | Torino | Season loan | ||
| 19 Aug 2026 | Joël Piroe | Loan | West Ham United | Season loan | ||
| 19 Aug 2026 | Sebastiaan Bornauw | Loan | Hamburger SV | Season loan | ||
| 15 Aug 2026 | Joe Gelhardt | Transfer | Hull City | 6,500,000 | Reported fee | |
| 05 Aug 2026 | Charlie Crew | Loan | Walsall | Season loan | ||
| 26 Jul 2026 | Jack Harrison | Transfer | New England Revolution | Undisclosed | ||
| 22 Jul 2026 | Max Wöber | Transfer | Schalke 04 | Free | ||
| 16 Jul 2026 | Isaac Schmidt | Transfer | Young Boys Berne | Undisclosed | ||
| 14 Jul 2026 | Karl Darlow | Transfer | Manchester United | Free | ||
| 09 Jul 2026 | Illan Meslier | Transfer | Arsenal | Free | ||
| 07 Jul 2026 | Harry Gray | Loan | Sheffield Wednesday | Season loan |