Sky Sports understands Sunderland are in talks with Brighton over deals for Liam Bridcutt and Will Buckley.
Black Cats boss Gus Poyet is desperate to bolster his squad in January and he has returned to his old club to make bids for the duo.
Poyet is a huge admirer of midfielder Bridcutt and winger Buckley and feels they would prove valuable additions to his team as he looks to steer them away from the relegation zone.
Bridcutt is thought to have attracted the interest of a number of Premier League clubs, but Sunderland are hoping to win the race for his signature.
Buckley has established himself as one of the best players in the Championship after impressing at the Amex Stadium over the last couple of seasons.
Brighton are reluctant to lose the duo as they remain key members of Oscar Garcia's squad as he looks to mount a serious challenge for promotion in the second half of the season.
Sunderland have already signed Marcos Alonso on loan from Fiorentina and Poyet hopes to be able to persuade Brighton to part with Bridcutt and Buckley.
Meanwhile, Sunderland have allowed striker Connor Wickham to extend his youth loan to Sheffield Wednesday until January 28th.