Career history
Every club J. O'Brien has played for, most recent first.| Season | Date | Left | Joined | Fee |
|---|---|---|---|---|
| 2024 - 2026 | – | – |
Rep. Of Ireland
|
– |
| 2023 - 2025 | – | – |
Republic of Ireland U21
|
– |
| 24/25 | Jul 30, 2024 | 2024 - 2026 | Transfer | |
| 23/24 | Jul 1, 2023 | 
RWDM
|
Undisclosed | |
| 22/23 | Aug 27, 2022 |
RWDM
|
Loan | |
| 22/23 | Jul 11, 2022 | Undisclosed | ||
| 2021 | – | – | – | |
| 20/21 | Feb 3, 2021 |
Crystal Palace U23
|
Loan | |
| – | – | – | – |
Transfer summary
- Moves
- 5
- Clubs
- 8
- Loans
- 2
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