| 18 Oct 20 | D. Welbeck Danny Welbeck | XXX | → |  Brighton & Hove AlbionBHA | Free |
| 16 Oct 20 | H. Roberts Hayden Roberts | Brighton & Hove AlbionBHA | → |  RochdaleROCH | Loan |
| 06 Oct 20 | T. Baluta Tudor Baluta | Brighton & Hove AlbionBHA | → | DKXDynamo KievDynamo Kiev | Loan |
| 05 Oct 20 | J. Moder Jakub Moder | Brighton & Hove AlbionBHA | → | LPXLech PoznanLech Poznan | Loan |
| 05 Oct 20 | M. Karbownik Michal Karbownik | Brighton & Hove AlbionBHA | → | LWXLegia WarsawLegia Warsaw | Loan |
| 02 Oct 20 | V. Gyökeres Viktor Gyökeres | Brighton & Hove AlbionBHA | → |  Swansea CitySWA | Loan |
| 02 Oct 20 | V. Gyökeres Viktor Gyökeres | Brighton & Hove AlbionBHA | → | Swansea CitySWA | Loan |
| 01 Oct 20 | A. Zeqiri Andi Zeqiri |  Lausanne SportsFCL | → | Brighton & Hove AlbionBHA | Undisclosed |
| 24 Sept 20 | D. Stephens Dale Stephens | Brighton & Hove AlbionBHA | → |  BurnleyBUR | Undisclosed |
| 22 Sept 20 | U. Eneme Ulrich Eneme |  SC AmiensAMI | → | Brighton & Hove AlbionBHA | Undisclosed |
| 18 Sept 20 | J. van Hecke Jan Paul van Hecke | Brighton & Hove AlbionBHA | → |  HeerenveenHEE | Loan |
| 18 Sept 20 | J. van Hecke Jan Paul van Hecke | Brighton & Hove AlbionBHA | → | HeerenveenHEE | Loan |
| 10 Sept 20 | J. van Hecke Jan Paul van Hecke |  NAC BredaNAC | → | Brighton & Hove AlbionBHA | Undisclosed |
| 05 Sept 20 | D. Button David Button | Brighton & Hove AlbionBHA | → |  West Bromwich AlbionWBA | Undisclosed |
| 02 Sept 20 | T. McGill Thomas McGill | Brighton & Hove AlbionBHA | → |  Crawley TownCRA | Loan |
| 02 Sept 20 | S. Duffy Shane Duffy | Brighton & Hove AlbionBHA | → |  CelticCEL | Loan |
| 02 Sept 20 | S. Duffy Shane Duffy | Brighton & Hove AlbionBHA | → | CelticCEL | Loan |
| 01 Sept 20 | G. Murray Glenn Murray | Brighton & Hove AlbionBHA | → |  WatfordWAT | Loan |
| 01 Sept 20 | G. Murray Glenn Murray | Brighton & Hove AlbionBHA | → | WatfordWAT | Loan |
| 28 Aug 20 | L. Ostigard Leo Ostigard | Brighton & Hove AlbionBHA | → |  Coventry CityCOV | Loan |
| 28 Aug 20 | A. Mooy Aaron Mooy | Brighton & Hove AlbionBHA | → |  Shanghai PortSIPG | Undisclosed |
| 28 Aug 20 | L. Ostigard Leo Ostigard | Brighton & Hove AlbionBHA | → | Coventry CityCOV | Loan |
| 26 Aug 20 | M. Clarke Matthew Clarke | Brighton & Hove AlbionBHA | → |  Derby CountyDER | Loan |
| 26 Aug 20 | R. Longman Ryan Longman | Brighton & Hove AlbionBHA | → |  AFC WimbledonWIM | Loan |
| 26 Aug 20 | M. Clarke Matthew Clarke | Brighton & Hove AlbionBHA | → | Derby CountyDER | Loan |
| 25 Aug 20 | T. Richards Taylor Richards | Brighton & Hove AlbionBHA | → |  Doncaster RoversDON | Loan |
| 25 Aug 20 | M. Montoya Martín Montoya | Brighton & Hove AlbionBHA | → |  Real BetisBET | Undisclosed |
| 25 Aug 20 | M. Montoya Martín Montoya | Brighton & Hove AlbionBHA | → | Real BetisBET | Undisclosed |
| 21 Aug 20 | W. O'Hora Warren O'Hora | Brighton & Hove AlbionBHA | → |  Milton Keynes DonsMKD | Loan |
| 14 Aug 20 | J. Mlakar Jan Mlakar | Brighton & Hove AlbionBHA | → | NMXNK MariborNK Maribor | Loan |
| 05 Aug 20 | P. Tau Percy Tau | Brighton & Hove AlbionBHA | → |  AnderlechtAND | Loan |
| 29 Jul 20 | J. Veltman Joël Veltman |  Ajax AmsterdamAJA | → | Brighton & Hove AlbionBHA | Undisclosed |
| 29 Jul 20 | J. Veltman Joël Veltman | Ajax AmsterdamAJA | → | Brighton & Hove AlbionBHA | Undisclosed |
| 27 Jul 20 | A. Lallana Adam Lallana |  LiverpoolLIV | → | Brighton & Hove AlbionBHA | Free |
| 23 Jul 20 | J. Weir Jensen Weir |  Wigan AthleticWGA | → | Brighton & Hove AlbionBHA | Undisclosed |
| 23 Jul 20 | J. Weir Jensen Weir | Wigan AthleticWGA | → | Brighton & Hove AlbionBHA | Undisclosed |
| 15 Jul 20 | Z. Emmerson Zac Emmerson |  Oldham AthleticOLD | → | Brighton & Hove AlbionBHA | Undisclosed |
| 08 Jul 20 | A. Knockaert Anthony Knockaert | Brighton & Hove AlbionBHA | → |  FulhamFUL | Undisclosed |
| 08 Jul 20 | A. Knockaert Anthony Knockaert | Brighton & Hove AlbionBHA | → | FulhamFUL | Undisclosed |
| 01 Jul 20 | L. Balogun Leon Balogun | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Free |
| 01 Jul 20 | L. Balogun Leon Balogun | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Free |
| 03 Feb 20 | J. Locadia Jürgen Locadia | Brighton & Hove AlbionBHA | → |  FC CincinnatiCIN | Loan |
| 03 Feb 20 | J. Locadia Jürgen Locadia | Brighton & Hove AlbionBHA | → | FC CincinnatiCIN | Loan |
| 31 Jan 20 | J. Mlakar Jan Mlakar | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Loan |
| 31 Jan 20 | J. Mlakar Jan Mlakar | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Loan |
| 31 Jan 20 | L. Balogun Leon Balogun | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Loan |
| 31 Jan 20 | T. Lamptey Tariq Lamptey |  ChelseaCHE | → | Brighton & Hove AlbionBHA | Undisclosed |
| 31 Jan 20 | L. Balogun Leon Balogun | Brighton & Hove AlbionBHA | → | Wigan AthleticWGA | Loan |
| 30 Jan 20 | G. Bong Gaëtan Bong | Brighton & Hove AlbionBHA | → |  Nottingham ForestFOR | Undisclosed |
| 30 Jan 20 | G. Bong Gaëtan Bong | Brighton & Hove AlbionBHA | → | Nottingham ForestFOR | Undisclosed |
| 24 Jan 20 | T. McGill Tom McGill | Brighton & Hove AlbionBHA | → | Crawley TownCRA | Loan |
| 24 Jan 20 | A. Mooy Aaron Mooy |  Huddersfield TownHUD | → | Brighton & Hove AlbionBHA | Undisclosed |
| 24 Jan 20 | A. Mooy Aaron Mooy | Huddersfield TownHUD | → | Brighton & Hove AlbionBHA | Undisclosed |
| 24 Jan 20 | B. Arce Billy Arce | Brighton & Hove AlbionBHA | → |  Liga de QuitoLDU | Loan |
| 17 Jan 20 | T. Baluta Tudor Baluta | Brighton & Hove AlbionBHA | → |  ADO Den HaagADO | Loan |
| 17 Jan 20 | T. Baluta Tudor Baluta | Brighton & Hove AlbionBHA | → | ADO Den HaagADO | Loan |
| 06 Jan 20 | A. Dreyer Anders Dreyer | Brighton & Hove AlbionBHA | → |  FC MidtjyllandMIDT | Undisclosed |
| 04 Jan 20 | P. Heise Philip Heise | Brighton & Hove AlbionBHA | → |  NurnbergNUR | Loan |