Post the International Break, it looks like these are the definitely fit players
GK - Kinsky Austin
CB - Romero, Van de Ven, Danso, Dragusin
FB - Porro, Udogie, Spence, Souza
CM - Gray, Bergvall, Gallagher, Palhinha
Fwds - Solanke, Richarlison, Kolo Muani, Tel, Simons
That's 17 fit outfield players
Injury doubt - Sarr (CM), possible shoulder injury, and Vicario (hernia ?)
Then there are players who might have become fit over the 3 week international break - Kudus, Bentancur, Maddison, Bissouma, Kulusevski, Davies - Odobert probably out until next season ?)
Perhaps 2 or 3 of those in bold might be fit for Sunderland or the next match to add to the squad above. But we may need to wait for until a week on Friday for the pre-match press conference to know which players are fit