Newcastle United reportedly fear that Jack Colback will be on the treatment table for some time after suffering a leg injury in last weekend's Wear-Tyne derby.
The 26-year-old ended up leaving the Stadium of Light on crutches after he was injured by Lee Cattermole in Sunday's 3-0 defeat to Sunderland.
According to The Shields Gazette, Colback has undergone a scan and there are concerns that the ex-Sunderland player will be out of action for a few weeks.
Steve McClaren's side have managed just one victory in 10 Premier League games.
