| june 25 2022 |  I. Balla | FC Budapest #21 | None | RSD24 201 |
| july 2 2021 |  G. Blažević | FC Valentain | FC Budapest #21 (On loan) | (RSD459 591) |
| december 31 2019 |  T. Džudžević | FC Budapest #21 | None | RSD1 203 194 |
| december 13 2019 |  S. Dermendjiev |  Miedź Legnica | FC Budapest #21 | RSD15 496 369 |
| november 10 2019 |  A. Liţcan | FC Budapest #21 | None | RSD955 086 |
| january 28 2019 | N. Sebők | FC Mezőgecse | FC Budapest #21 | RSD14 051 194 |
| january 27 2019 |  J. Gallareto | FC Budapest #21 | None | RSD1 116 665 |
| january 24 2019 | T. Chilingirov | FC Budapest #21 | None | RSD1 388 016 |
| january 5 2019 | T. Chilingirov |  FC Latvijas valdība | FC Budapest #21 | RSD1 903 565 |
| january 1 2019 |  G. Hasanoglu | FC Budapest #21 | None | RSD1 388 016 |
| october 18 2018 | F. Harsányi | FC Gyor #8 | FC Budapest #21 | RSD2 224 464 |
| september 20 2018 |  A. Zagreda | FC Budapest #21 | None | RSD531 372 |
| september 19 2018 | G. Teleki | FC Budapest #21 | None | RSD22 730 |
| august 29 2018 |  W. Djoser | Bala Town FC | FC Budapest #21 (On loan) | (RSD504 679) |
| august 25 2018 | Ç. Özal | Chepinets | FC Budapest #21 | RSD5 916 846 |
| july 30 2018 | K. Nagy | FC Budapest #21 | None | RSD20 181 |
| july 2 2018 | G. Tölgyesi | FC Budapest #21 | None | RSD31 772 |
| july 2 2018 | B. Simeunović |  ⭐Frutigen⭐Garde Sport⭐ | FC Budapest #21 | RSD3 929 691 |
| june 9 2018 | S. Dzsudzsák | FC Budapest #21 | None | RSD11 400 |
| june 7 2018 | D. Schelaru | FC Budapest #21 | None | RSD29 542 |
| may 13 2018 | T. Džudžević |  NK Velika Gorica #5 | FC Budapest #21 | RSD2 159 323 |
| may 12 2018 |  R. Caspers | coolman | FC Budapest #21 (On loan) | (RSD102 883) |
| may 9 2018 | O. Soós | FC Budapest #21 | None | RSD13 728 |
| april 16 2018 | Á. Jagadics | FC Budapest #21 | None | RSD30 122 |
| march 27 2018 | N. Râmniceanu | FC Dinamo 1948 | FC Budapest #21 | RSD6 729 959 |
