The Stoke City midfielder has been in fine form for the Potters this season.
The Whites beat Wolves on Saturday thanks to a second-half winner credited to Roofe.
Sullivan claimed last summer that Austin had "no ligaments in his knee".
Stoke City secured back-to-back Premier League victories after a comfortable 2-0 defeat over Hull City.
Newcastle United beat Ipswich Town 3-0 to stay top of the Championship
Warburton is preparing his Glasgow Rangers side for the Old Firm Scottish League Cup semi-final on Sunday.
Tottenham Hotspur drew 0-0 at Bournemouth today.
Aston Villa defeated Fulham 1-0 in the Championship earlier today.
Manchester City have not won in four games in all competitions.
Arsenal’s Mesut Ozil has been in superb form this season.
Manchester United are not concerned about José Mourinho’s outspoken manner despite reports that Luke Shaw is unhappy at the criticism his manager levelled at him after the defeat at Watford on Sunday.
West Ham United have some very exciting teenage talent in their ranks.
Sunderland's on loan winger is second only to his countryman Eden Hazard.