Brighton are reluctant to allow Tariq Lamptey to leave the club on loan before the end of the January transfer window.
As previously reported, Sporting Lisbon have made an enquiry about the right-back - a position they are looking to fill given that Pedro Porro is expected to join Tottenham.
Ligue 1 side Lyon are also considering a move for Lamptey, who has been a bench option for the Seagulls this season.
The Ghana international - who opted to play for the Black Stars ahead of England - has made just one start for Brighton in the Premier League this season.
The 22-year-old, who started out at Chelsea, had a much more prolific season last year, starting 16 league games and starring for the Seagulls.
Despite his reduction in game-time with Pascal Gross occupying the right-back spot, Brighton are still reluctant to let Lamptey leave.
Lamptey was once considered as a potential England player for the future before switching his international allegiance to Ghana last year.
Meanwhile, Brighton have also been rebuffed in a bid to sign Amadou Haidara from RB Leipzig.
Roberto De Zerbi's side though do remain on course to sign 19-year-old Swedish midfielder Yasin Ayari from AIK.