Bright have decided not to offer midfield trialist Darren Carter a deal - but Albion boss Gustavo Poyet is keen on adding a new left-back to his roster.
The Seagulls are looking to sign Derry’s former Northern Ireland under 21 full-back Danny Lafferty as competition for Marcos Painter.
The need to recruit extra defensive cover has become more important since the recent retirement of assistant boss Mauricio Taricco.
Brighton take on Championship rivals Millwall tonight and will be looking to end a run of seven matches without a win in all competitions.
More than 1,600 Albion fans are expected to make the short trip to the New Den.