Sunderland manager David Moyes is hoping to sign out-of-favour Everton pair Darron Gibson and Bryan Oviedo before Tuesday's transfer deadline.
Left-back Oviedo, 26, and 29-year-old midfielder Gibson have been fringe figures under Everton boss Ronald Koeman this season.
Steven Pienaar, Victor Anichebe and Joleon Lescott, who played under Moyes when he was Everton manager, have already moved to Wearside this season.
Sunderland play Tottenham on Tuesday.
Gibson has made one appearance for Everton this season - as a substitute against Yeovil in the EFL Cup - while Costa Rican Oviedo has played seven times.
Everton manager Ronald Koeman was keen to keep hold of Oviedo but has allowed him to leave after talks with the player.