| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | David Forde | 1979-12-20 | 187 | 85 | |||
| D | Nathan Baker | 1991-04-23 | 187 | 74 | 2019-06-30 | ||
| M | Ryan Mason | 1991-06-13 | 175 | 63 | 2019-06-30 | ||
| F | Harry Kane | 1993-07-28 | 183 | 65 | 2022-06-30 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Chris Taylor (M) | Millwall FC | Blackburn Rovers | Confirmed | |
| 17.Mar | Chris Taylor (M) | Blackburn Rovers | Millwall FC | Confirmed | |
| 23.Jan | Shane Ferguson (M) | Millwall FC | Newcastle United | Confirmed | |
| 9.Nov | Shane Ferguson (M) | Millwall FC | Newcastle United | Confirmed | |
| 7.Aug | Shane Ferguson (M) | Newcastle United | Millwall FC | Confirmed | |
| 7.Aug | Shane Ferguson (M) | Newcastle United | Millwall FC | Rumour | |
| 2.Feb | Jordan Archer (GK) | Tottenham Hotspur | Millwall FC | Confirmed | |
| 26.Jan | Jos Hooiveld (D) | Southampton FC | Millwall FC | Confirmed | |
| 12.Jan | Shaun Cummings (D) | Reading FC | Millwall FC | Confirmed | |
| 7.Jan | Scott Malone (D) | Millwall FC | Cardiff City | Confirmed |