| Date | Player | From | To | Amount |
|---|---|---|---|---|
| 31 Aug 18 | Vurnon Anita | Loan | ||
| 31 Aug 18 | Vurnon Anita | Loan | ||
| 31 Aug 18 | Eunan O'Kane | Loan | ||
| 30 Aug 18 | Isaiah Brown | Loan | ||
| 30 Aug 18 | Isaiah Brown | Loan | ||
| 29 Aug 18 | Caleb Ekuban | Loan | ||
| 21 Aug 18 | Laurens De Bock | Loan | ||
| 21 Aug 18 | Yosuke Ideguchi | Loan | ||
| 02 Aug 18 | Andy Lonergan | Free | ||
| 02 Aug 18 | Luke Murphy | Loan | ||
| 02 Aug 18 | Luke Murphy | Free | ||
| 01 Aug 18 | Ronaldo Vieira | Undisclosed | ||
| 01 Aug 18 | Ronaldo Vieira | Undisclosed | ||
| 31 Jul 18 | Patrick Bamford | Undisclosed | ||
| 31 Jul 18 | Hadi Sacko | Loan | ||
| 30 Jul 18 | Jack Harrison | Loan | ||
| 30 Jul 18 | Jack Harrison | Loan | ||
| 28 Jul 18 | Barry Douglas | Undisclosed | ||
| 28 Jul 18 | Barry Douglas | Undisclosed | ||
| 16 Jul 18 | Jamal Blackman | Loan | ||
| 16 Jul 18 | Jamal Blackman | Loan | ||
| 06 Jul 18 | Tyler Denton | Loan | ||
| 06 Jul 18 | Paudie O'Conner | Loan | ||
| 05 Jul 18 | Jay-Roy Grot | Loan | ||
| 05 Jul 18 | Jay-Roy Grot | Loan | ||
| 03 Jul 18 | Pawel Cibicki | Loan | ||
| 01 Jul 18 | Lewie Coyle | Loan | ||
| 01 Jul 18 | Lewis Baker | Loan | ||
| 01 Jul 18 | Lewis Baker | Loan | ||
| 19 Jun 18 | Felix Wiedwald | Undisclosed | ||
| 19 Jun 18 | Felix Wiedwald | Undisclosed | ||
| 11 Jun 18 | Madger Gomes | Undisclosed | ||
| 31 Jan 18 | Tyler Roberts | Undisclosed | ||
| 31 Jan 18 | Jordan Stevens | Undisclosed | ||
| 31 Jan 18 | Tyler Roberts | Undisclosed | ||
| 29 Jan 18 | Pascal Struijk | Undisclosed | ||
| 29 Jan 18 | Pascal Struijk | Undisclosed | ||
| 26 Jan 18 | Mallik Wilks | Loan | ||
| 22 Jan 18 | Mateusz Klich | Loan | ||
| 22 Jan 18 | Mateusz Klich | Loan | ||
| 18 Jan 18 | Adam Forshaw | 4500000 | ||
| 11 Jan 18 | Laurens De Bock | Undisclosed | ||
| 09 Jan 18 | Yosuke Ideguchi | Undisclosed | ||
| 09 Jan 18 | Yosuke Ideguchi | CLXCLE | Loan | |
| 05 Jan 18 | FOXFagiano Okayama | Undisclosed | ||
| 05 Jan 18 | Loan |