| 1. Round | 03/04/2021 | RC Celta B | - | Real Valladolid B | 1:3 | ||||
| 2. Round | 11/04/2021 | Cultural Leonesa | - | RC Celta B | 0:3 |  |
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| 3. Round | 18/04/2021 | RC Celta B | - | Burgos CF | 1:1 | ||||
| 4. Round | 25/04/2021 | Real Valladolid B | - | RC Celta B | 0:5 | |
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| 5. Round | 02/05/2021 | RC Celta B | - | Cultural Leonesa | 2:1 | ||||
| 6. Round | 09/05/2021 | Burgos CF | - | RC Celta B | 1:0 |
Spain