The Black Cats have seen plenty of players leave too, including stalwart Lee Cattermole and high earners Bryan Oviedo and Donald Love. Here, we round-up every deal the North East club has concluded during the summer. Scroll down and click through the pages to see the full list.
21. IN: Ruben Sammut
The ex-Chelsea man is another recruit for Elliot Dickman's U23s Photo: FRANK REID
22. OUT: Jack Baldwin
The defender has departed on loan to Salford City. Photo: Jan Kruger
23. OUT: Jack Diamond
The winger has gone out on loan to Harrogate Town. Photo: FRANK REID
24. OUT: George Honeyman
Sunderland's former captain departed for Hull City. Photo: Jordan Mansfield