The Premier League side are yet to add to their first-team squad during this window.
Sunderland's John O'Shea
The Black Cats are yet to add to their first-team squad during this window but have let six players move on.
Sunderland manager David Moyes
And while that is arguably a dangerous strategy as the season gets closer and closer - especially for a side that has secured Premier League survival on the penultimate day of the last three seasons - the club captain is confident that they will soon have plenty of names through the door following Moyes' arrival.
"Hopefully, we will have some familiar faces returning to us for next season, and some new faces too, and we can keep hold of everyone that is here already," he told the Shields Gazette.
"Those are the important things over the next few weeks.
"But the manager has fantastic experience of getting things done in the transfer market, and hopefully we can get them done quickly."
Although none of the six that have left this summer played particularly important roles during their final season at the Stadium of Light, Moyes will surely feel that they will need replacing as a lack of depth could prove costly if the side are hit by several injuries during the campaign.
And he will be hoping that he can also sign the kind of players that his predecessor Sam Allardyce was able to bring in in January.
O'Shea talks with one of the January signings that inspired Sunderland to safety, Wahbi Khazri
The likes of Jan Kirchhoff, Lamine Kone and Wahbi Khazri quickly became integral members of the squad and helped inspire the turnaround that saw them stay up.
And Moyes will be hoping that he can uncover some gems of his own during the remaining weeks of the window to ensure that Sunderland do not go into the final games of the campaign worrying about whether they are going to keep their heads above water once again.