Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 29.01.2018 | D. Sakho | West Ham | Rennes | N/A |
| 27.01.2018 | Joseph Martin O'Brien | West Ham | — | N/A |
| 26.01.2018 | João Mário | Inter | West Ham | Loan |
| 17.01.2018 | M. Samuelsen | West Ham | — | Loan |
| 06.01.2018 | J. Cullen | — | West Ham | N/A |
| 03.01.2018 | R. Burke | — | West Ham | N/A |
| 02.01.2018 | R. Oxford | Borussia Mönchengladbach | West Ham | N/A |
| 05.12.2017 | Matt Carter | West Ham | — | Free |
| 31.08.2017 | J. Gordon | West Ham | — | N/A |
| 25.08.2017 | R. Snodgrass | West Ham | Aston Villa | Loan |
| 17.08.2017 | S. Féghouli | West Ham | Galatasaray | € 4.3M |
| 09.08.2017 | J. Eggleton | West Ham | — | Free |
| 07.08.2017 | S. Hakšabanović | — | West Ham | € 3M |
| 02.08.2017 | K. Knoyle | West Ham | — | Free |
| 28.07.2017 | A. Fletcher | West Ham | — | € 7.2M |
| 24.07.2017 | J. Hernández | Bayer Leverkusen | West Ham | € 17.8M |
| 22.07.2017 | D. Randolph | West Ham | — | € 5.6M |
| 22.07.2017 | M. Arnautović | — | West Ham | € 22.3M |
| 18.07.2017 | J. Hart | Manchester City | West Ham | Loan |
| 16.07.2017 | G. Dobson | West Ham | Sparta Rotterdam | N/A |
| 13.07.2017 | E. Valencia | West Ham | — | N/A |
| 01.07.2017 | E. Valencia | Everton | West Ham | N/A |
| 01.07.2017 | P. Zabaleta | Manchester City | West Ham | Free |
| 01.07.2017 | Håvard Nordtveit | West Ham | 1899 Hoffenheim | € 7M |
| 01.07.2017 | J. Gordon | — | West Ham | N/A |
| 01.07.2017 | G. Töre | West Ham | Besiktas | N/A |
| 01.07.2017 | R. Spiegel | West Ham | Boavista | Free |
| 01.07.2017 | S. Howes | West Ham | — | Free |
| 01.07.2017 | Toni Martínez | — | West Ham | N/A |
| 29.06.2017 | S. Hendrie | West Ham | — | Free |
| 16.05.2017 | S. Hendrie | — | West Ham | N/A |
| 31.01.2017 | R. Oxford | West Ham | — | Loan |
| 30.01.2017 | D. Payet | West Ham | Marseille | € 29M |
| 27.01.2017 | R. Snodgrass | — | West Ham | € 12M |
| 23.01.2017 | Toni Martínez | West Ham | — | Loan |
| 20.01.2017 | M. Browne | West Ham | — | Loan |
| 20.01.2017 | José Fonte | Southampton | West Ham | € 9.2M |
| 13.01.2017 | Samuel George Ford | West Ham | — | Loan |
| 12.01.2017 | Alex Pike | West Ham | — | Loan |
| 06.01.2017 | L. Page | West Ham | — | N/A |
| 06.01.2017 | S. Howes | West Ham | — | Loan |
| 01.01.2017 | J. Gordon | West Ham | — | Loan |
| 01.01.2017 | M. Samuelsen | West Ham | — | Loan |
| 22.11.2016 | M. Samuelsen | — | West Ham | N/A |
| 14.10.2016 | A. Nasha | West Ham | — | Free |
| 01.09.2016 | Nathan Mavila | West Ham | — | Free |
| 31.08.2016 | E. Valencia | West Ham | Everton | Loan |
| 31.08.2016 | D. Henry | West Ham | — | Loan |
| 30.08.2016 | R. Burke | West Ham | — | Loan |
| 28.08.2016 | S. Zaza | Juventus | West Ham | Loan |