Sunderland's injury problems have worsened with the news Adnan Januzaj has been ruled out for a minimum of six weeks.
The on-loan Manchester United winger, who was returning from suspension after a red card against Tottenham in the Premier League last Saturday, injured an ankle in Saturday's 3-2 Premier League loss to Crystal Palace at the Stadium of Light.
The 21-year-old underwent a scan on Tuesday, with the results confirming he suffered ligament damage and now faces a spell on the sidelines, alongside fellow long-term absentees Vito Mannone, Sebastian Larsson and Fabio Borini.
Goalkeeper Mannone injured an elbow in training and forward Borini damaged a groin taking a free kick, while knee trouble has sidelined midfielder Larsson.