Sullivan joined Brickfield Rangers on loan in September 2017. Sullivan made his first team debut for The Nomads as a second half substitute against Airbus in a 5-1 victory in the Welsh League Cup in October 2018.
| APPEARANCES | GOALS | ASSISTS | |
| 0(4) | 0 | 0 |
| Competition | Appearances | Goals | Assists | Yellow Cards | Red Cards |
| Welsh League Cup | 0 (1) | 0 | 0 | 0 | 0 |
| Friendly | 0 (3) | 0 | 0 | 0 | 0 |
| Total | 0 (4) | 0 | 0 | 0 | 0 |
