The Black Cats are not in League One action until April.
The Black Cats ace is likely to be out for the remainder of the League One season.
Sunderland grabbed a 1-1 draw at League One rivals Wycombe Wanderers on Saturday thanks to a stoppage-time Duncan Watmore equaliser.
Duncan Watmore played well for Sunderland against Blackpool on Tuesday.
The Black Cats forward has endured two years of injury woes but is now back on the pitch.
Sunderland drew at home with Blackpool on Tuesday night.
The Black Cats ace scored against Man City's Under-21s in the Checkatrade Trophy. His last goal before then was in a Premier League win.
Watmore managed 45 minutes for Sunderland in the Checkatrade Trophy.
Sunderland drew with against Charlton Athletic on Saturday.
Sunderland winger Duncan Watmore has now made four appearances so far this season.
Everton defender Luke Garbutt was left confused by Liverpool's bus parade through the city yesterday.
Tottenham Hotspur lost 20 games this past season, and Glenn Hoddle feels that Mauricio Pochettino needs to make big improvements.
Divock Origi scored for Liverpool in the Champions League final on Saturday.
Dutch star congratulates Liverpool star.
Newcastle United manager Rafa Benitez has become a firm fan favourite at St James Park.
Tottenham Hotspur goalkeeper Hugo Lloris made some controversial comments after defeat to Liverpool.
Tottenham Hotspur defender Danny Rose has become Mauricio Pochettino's side's first choice left-back again.
Tottenham Hotspur reportedly want Real Betis ace Giovani Lo Celso.
Celtic and Aston Villa have both been linked with Joe Aribo.
The Leeds United youngster didn't feature heavily in the Under-20 World Cup.
Sunderland are currently heavily reliant on youngster Josh Maja to score goals in League One.
The Black Cats man sustained two serious injuries in Sunderland's two relegation campaigns, but is edging ever closer to full fitness.
Sunderland manager David Moyes addressed the media ahead of his side's trip to Swansea City in the Premier League.