| august 1 2018 |  P. Te |  Sheffield United #2 |  FC Almolonga | RSD4 186 801 |
| july 14 2018 |  T. Allen |  舜耕山矿工 | Sheffield United #2 (On loan) | (RSD5 917 203) |
| july 10 2018 |  İ. Tarik |  FC Pale #3 | Sheffield United #2 | RSD6 574 850 |
| july 8 2018 |  G. Rhodes |  大秦帝国 | Sheffield United #2 (On loan) | (RSD9 396 491) |
| july 5 2018 | W. Snowball | Sheffield United #2 |  Copenhagen IF #9 (On loan) | (RSD311 043) |
| july 5 2018 | J. Hansom | Sheffield United #2 | Swadlincote City #2 (On loan) | (RSD213 109) |
| july 5 2018 | G. Witty | Sheffield United #2 | Plymouth United (On loan) | (RSD173 715) |
| july 5 2018 |  V. Salenieks | Sheffield United #2 | 上海中远 (On loan) | (RSD312 000) |
| july 5 2018 |  R. Agraso |  La Plata FC | Sheffield United #2 | RSD40 500 000 |
| july 3 2018 | R. Channing | Sheffield United #2 |  Gibraltar United #32 | RSD4 965 015 |
| july 3 2018 |  A. Linder | Sheffield United #2 |  Howth Town | RSD2 035 758 |
| july 2 2018 |  G. Manolis | Sheffield United #2 |  Tórshavn #3 | RSD2 827 073 |
| may 20 2018 | W. Snowball | Sheffield United #2 | Taunton City #3 (On loan) | (RSD169 029) |
| may 20 2018 | R. Channing | Sheffield United #2 | Rugeley United #2 (On loan) | (RSD178 976) |
| may 20 2018 |  C. Chinn | Sheffield United #2 | None | RSD1 613 173 |
| may 18 2018 |  K. Torres | FC SDTS | Sheffield United #2 (On loan) | (RSD10 258 853) |
| may 18 2018 |  T. Boazza | Lecce #2 | Sheffield United #2 | RSD10 169 700 |
| may 17 2018 |  A. Solaimani | Sheffield United #2 | Ferrara #3 (On loan) | (RSD178 141) |
| may 17 2018 | K. Mundy | Sheffield United #2 | South Shields FC | RSD7 225 836 |
| may 16 2018 | L. Chow |  Taiwan Wolf | Sheffield United #2 (On loan) | (RSD2 511 405) |
| may 15 2018 | P. Elkjaer |  MPL Tottenham Hotspur | Sheffield United #2 (On loan) | (RSD1 762 167) |
| may 14 2018 |  C. de Lorraine |  Bhimeshwor | Sheffield United #2 | RSD19 200 000 |
| may 12 2018 | A. Linder | Sheffield United #2 | Guiseley City (On loan) | (RSD70 023) |
| may 10 2018 | D. Rohner | Sheffield United #2 | Sunderland #3 | RSD1 249 500 |
| may 10 2018 | E. Rolland | Sheffield United #2 |  FC Prague #30 | RSD5 941 013 |
