| Player Info | |
|---|---|
| Name | Marcos Alonso |
| Club |  Celta Vigo |
| Country | Spanish |
| Position | Defender |
| Date of Birth | 1990-12-28 |
| Weight | |
| Height | 187 |
| Foot | Left |
| https://www.facebook.com/marcosalonsoMA3 | |
| https://instagram.com/marcosalonso28 | |
| https://twitter.com/marcosalonso03 |
| Competitions |
|---|
| LaLiga |
| UEFA Europa League |
| Injuries | Injury | Expected Return |
|---|
| Injuries |
|---|
| Suspensions | Charge | Days Banned | Days Left |
|---|
| Suspensions |
|---|
| Transfers | From Club | To Club | Transfer Type | Amount | From Date | To Date |
|---|
| Transfers |
|---|
| Transfer Rumours | From Club | To Club | % | Transfer Type | Amount | Date Created | Source | |
|---|---|---|---|---|---|---|---|---|
| Marcos Alonso | Celta Vigo |
 |
Celta Vigo |
 |
Contract Extension | None | 26/11/2025 | AS |
| Marcos Alonso |  Free agent |
|
Celta Vigo |
|
Transfer | Free transfer | 26/11/2025 | AS |
| Transfer Rumours |
|---|
| Marcos Alonso Club From: Celta VigoClub To: Celta VigoType: Contract Extension Amount: None Date Created: 26/11/2025 Source: AS |
| Marcos Alonso Club From: Free agentClub To: Celta VigoType: Transfer Amount: Free transfer Date Created: 26/11/2025 Source: AS |