Bromley FC · League OneJJ McKiernan is a 24-year-old central midfield who plays for Bromley FC in League One. As of the 2025/26 season their market value is €240k and their ScoutRox Score rating is 57, with a potential of 57.
| Season | Transfer | Fee |
|---|---|---|
| 26/27 |
 Lincoln City
 Bromley
|
Free |
| 25/26 |
 Burton Albion
Lincoln City
|
Loan |
| 25/26 |
Lincoln City
Burton Albion
|
Loan |
| 24/25 |
Burton Albion
Lincoln City
|
Loan |
| 24/25 |
Lincoln City
Burton Albion
|
Loan |
| 24/25 |
 Morecambe FC
Lincoln City
|
Free |
| 23/24 |
 Watford U21
Morecambe FC
|
Free |
| 22/23 |
 Eastleigh
Watford U21
|
Loan |
| 22/23 |
Watford U21
Eastleigh
|
Loan |
| 22/23 |
Eastleigh
Watford U21
|
Loan |
| 22/23 |
Watford U21
Eastleigh
|
Loan |
| 21/22 |
 Bohemians
Watford U23
|
Loan |
| 21/22 |
Watford U23
Bohemians
|
Loan |
| 20/21 |
 Watford U18
Watford U23
|
Free |
| 18/19 |
 Andover Youth
Watford U18
|
Free |