Phil Parkinson is continuing to reshape his squad and having been patient in his pursuit of targets, is set to step-up his efforts to land new faces today.
Here, we look at nine deals that could be completed by the Black Cats before the window slams shut at 11pm – with incomings and outgoings in focus:
5. IN: Declan John
One of a number of left-back options being considered by the Black Cats, John could be allowed to move on before the window slams shut. One to watch with interest as the day progresses. Photo: Alex Livesey
6. OUT: Jon McLaughlin
McLaughlin is understood to be happy to remain at the Stadium of Light but, with his contract up in the summer, any bids could test Sunderland’s resolve. Photo: FRANK REID
7. IN: Josh Morris
Football Insider claim that the Fleetwood Town winger is on Sunderland's radar - and is being lined-up as a potential replacement for Aiden McGeady Photo: Pete Norton
8. OUT: Marc McNulty
Hibernian and Swindon Town have both been credited with an interest in McNulty this month, but any deal would require a green light from both Sunderland and parent club Reading. Photo: Frank Reid