Albion captain Danny Cullip is wanted by Championship rivals Sheffield United.
The Blades are expected to make a bid for the 28-year-old centre half.
Cullip seems certain to leave to further his career after five years with the Seagulls, providing the clubs agree a fee.
Albion do not want him to go and are offering him a new deal. His contract expires at the end of the season, when he would be entitled to a free transfer.
Sheffield's interest in Cullip follows Albion midfielder Darren Currie's £250,000 move to Ipswich last Friday.
The cash-strapped Seagulls launched the Alive and Kicking Appeal in September to cover a £2 million shortfall.
The Appeal has raised around £250,000 and Albion will earn a similar amount from next month's FA Cup tie at Tottenham but, together with the fee for Currie, it still leaves a gaping hole in the finances.
Blades' boss Neil Warnock has targeted Cullip to plug a defence that threw away a two-goal lead in last Saturday's 2-2 draw at rock-bottom Rotherham, which was still enough to lift United into a play-off place.
Bracknell-born Cullip signed for Albion from Brentford for £50,000 in October 1999 after a month's loan.
The former Fulham and Oxford defender, a talismanic figure, has made 242 appearances for the club in all competitions.
Albion will today ask Steve Claridge to stay with them for another month.
Claridge's month-long contract expired with last Saturday's 2-0 defeat away to his old club Millwall.
The 38-year-old striker is keen to remain with the Seagulls for the rest of the season but manager Mark McGhee is reluctant to make such a commitment at this stage.
Albion's financial position is precarious and McGhee wants to adopt a wait-and-see policy with regard to Claridge.
The Seagulls have won two matches and lost three since he resumed his League career after a spell as player-manager of non-league Weymouth.
If Claridge agrees to stay he will be available for the next six Championship matches, starting with Friday's visit by Stoke but he is ineligible for the FA Cup third round tie at Tottenham on January 8 as he has already played in the competition for Weymouth.
Paul Watson plays in the Reserves against Peterborough at Worthing today (2pm) following his first appearance of the season at Millwall as a second half substitute.
McGhee said of the rightback, who returned recently from major back surgery: "I am trying to increase the size of my squad from within.
"We are going to need everybody over Christmas and the New Year, so I am just keeping them all involved."
Jake Robinson is involved in Albion's FA Youth Cup tie at Woking tomorrow night.
The Blades are expected to make a bid for the 28-year-old centre half.
Cullip seems certain to leave to further his career after five years with the Seagulls, providing the clubs agree a fee.
Albion do not want him to go and are offering him a new deal. His contract expires at the end of the season, when he would be entitled to a free transfer.
Sheffield's interest in Cullip follows Albion midfielder Darren Currie's £250,000 move to Ipswich last Friday.
The cash-strapped Seagulls launched the Alive and Kicking Appeal in September to cover a £2 million shortfall.
The Appeal has raised around £250,000 and Albion will earn a similar amount from next month's FA Cup tie at Tottenham but, together with the fee for Currie, it still leaves a gaping hole in the finances.
Blades' boss Neil Warnock has targeted Cullip to plug a defence that threw away a two-goal lead in last Saturday's 2-2 draw at rock-bottom Rotherham, which was still enough to lift United into a play-off place.
Bracknell-born Cullip signed for Albion from Brentford for £50,000 in October 1999 after a month's loan.
The former Fulham and Oxford defender, a talismanic figure, has made 242 appearances for the club in all competitions.
Albion will today ask Steve Claridge to stay with them for another month.
Claridge's month-long contract expired with last Saturday's 2-0 defeat away to his old club Millwall.
The 38-year-old striker is keen to remain with the Seagulls for the rest of the season but manager Mark McGhee is reluctant to make such a commitment at this stage.
Albion's financial position is precarious and McGhee wants to adopt a wait-and-see policy with regard to Claridge.
The Seagulls have won two matches and lost three since he resumed his League career after a spell as player-manager of non-league Weymouth.
If Claridge agrees to stay he will be available for the next six Championship matches, starting with Friday's visit by Stoke but he is ineligible for the FA Cup third round tie at Tottenham on January 8 as he has already played in the competition for Weymouth.
Paul Watson plays in the Reserves against Peterborough at Worthing today (2pm) following his first appearance of the season at Millwall as a second half substitute.
McGhee said of the rightback, who returned recently from major back surgery: "I am trying to increase the size of my squad from within.
"We are going to need everybody over Christmas and the New Year, so I am just keeping them all involved."
Jake Robinson is involved in Albion's FA Youth Cup tie at Woking tomorrow night.