| Date | Player | From | To | Type / Fee |
|---|---|---|---|---|
| Jul 1, 2019 | Joseph Willock |  Arsenal Academy |  Arsenal | Transfer |
| Jul 1, 2019 | Bukayo Saka | Arsenal Academy | Arsenal | Transfer |
| Jun 30, 2019 | Denis Suarez | Arsenal |  Barcelona | End of loan |
| Jun 30, 2019 | David Ospina |  SSC Napoli | Arsenal | End of loan |
| Jun 30, 2019 | Takuma Asano |  Hannover 96 | Arsenal | End of loan |
| May 31, 2019 | Calum Chambers |  Fulham | Arsenal | End of loan |
| May 31, 2019 | Emiliano Martinez |  Reading | Arsenal | End of loan |
| May 31, 2019 | Matt Macey |  Plymouth | Arsenal | End of loan |
| May 31, 2019 | Krystian Bielik |  Charlton | Arsenal | End of loan |
| Jan 31, 2019 | Denis Suarez | Barcelona | Arsenal | Loan €2.5M |
| Jan 23, 2019 | Emiliano Martinez | Arsenal | Reading | Loan |
| Jan 1, 2019 | Edward Nketiah | Arsenal Academy | Arsenal | Transfer |
| Aug 17, 2018 | Joel Campbell | Arsenal |  Frosinone | Transfer €1.5M |
| Aug 17, 2018 | David Ospina | Arsenal | SSC Napoli | Loan |
| Aug 16, 2018 | Krystian Bielik | Arsenal | Charlton | Loan |
| Aug 9, 2018 | Lucas Perez | Arsenal |  West Ham | Transfer €4.4M |
| Aug 7, 2018 | Calum Chambers | Arsenal | Fulham | Loan |
| Aug 6, 2018 | Santi Cazorla | Arsenal |  Villarreal | Free transfer |
| Aug 3, 2018 | Chuba Akpom | Arsenal |  PAOK Thessaloniki FC | Transfer €2.2M |
| Jul 30, 2018 | Matt Macey | Arsenal | Plymouth | Loan |
| Jul 11, 2018 | Matteo Guendouzi |  Lorient | Arsenal | Transfer €8M |
| Jul 10, 2018 | Lucas Torreira |  Sampdoria | Arsenal | Transfer €28.7M |
| Jul 9, 2018 | Jack Wilshere | Arsenal | West Ham | Free transfer |
| Jul 2, 2018 | Sokratis Papastathopoulos |  Borussia Dortmund | Arsenal | Transfer €16M |
| Jul 1, 2018 | Takuma Asano | Arsenal | Hannover 96 | Loan €1M |
