| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| M | Erik Lamela | 1992-03-04 | 180 | 74 | 2020-06-30 | ||
| M | Manuel Lanzini | 1993-02-15 | 169 | 64 | 2020-06-30 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Martín Alaníz (F) | Real Oviedo | Club Atlético River Plate | Confirmed | |
| 19.Aug | Giovanni Simeone (F) | Club Atlético River Plate | Genoa CFC | Confirmed | |
| 5.Aug | Gabriel Ivan Mercado (D) | Club Atlético River Plate | Sevilla FC | Confirmed | |
| 27.Jul | Martín Alaníz (F) | Club Atlético River Plate | Real Oviedo | Confirmed | |
| 6.Jul | Emanuel Mammana (D) | Club Atlético River Plate | Olympique Lyonnais | Confirmed | |
| 24.Oct | Carlos Carbonero (M) | UC Sampdoria | Club Atlético River Plate | Confirmed | |
| 1.Sep | Ramiro Funes Mori (D) | Club Atlético River Plate | Everton FC | Confirmed | |
| 28.Aug | Matias Kranevitter (M) | Club Atlético River Plate | Atlético de Madrid | Confirmed | |
| 27.Aug | Carlos Carbonero (M) | Club Atlético River Plate | UC Sampdoria | Confirmed | |
| 11.Jul | Germán Pezzella (D) | Club Atlético River Plate | Real Betis | Confirmed |