West Bromwich Albion and Swansea City are reportedly keeping tabs on the midfielder, who is out of contract at the end of the season.
The Mirror claims that both clubs want to use his contract situation to strike a cut-price deal.
On Friday, Colback denied rumours that he could leave the Black Cats.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Leeds UnitedLeeds | 31 | 19 | 9 | 3 | 62 | 19 | 43 | 66 |
| 2 | Sheffield UnitedSheff Utd | 31 | 20 | 6 | 5 | 43 | 22 | 21 | 64 |
| 3 | Burnley | 31 | 16 | 13 | 2 | 37 | 9 | 28 | 61 |
| 4 | Sunderland | 31 | 16 | 11 | 4 | 47 | 28 | 19 | 59 |
| 5 | West Bromwich AlbionWest Brom | 31 | 11 | 14 | 6 | 41 | 28 | 13 | 47 |
| 6 | Blackburn RoversBlackburn | 31 | 13 | 6 | 12 | 35 | 31 | 4 | 45 |
| 7 | Middlesbrough | 30 | 12 | 8 | 10 | 49 | 39 | 10 | 44 |
| 8 | Norwich CityNorwich | 31 | 11 | 10 | 10 | 50 | 43 | 7 | 43 |
| 9 | Bristol City | 30 | 10 | 12 | 8 | 38 | 35 | 3 | 42 |
| 10 | Watford | 31 | 12 | 6 | 13 | 42 | 44 | -2 | 42 |
| 11 | Sheffield WednesdaySheff Weds | 31 | 11 | 9 | 11 | 44 | 48 | -4 | 42 |
| 12 | Coventry CityCoventry | 31 | 11 | 8 | 12 | 41 | 40 | 1 | 41 |
| 13 | Queens Park RangersQPR | 31 | 10 | 11 | 10 | 35 | 40 | -5 | 41 |
| 14 | Millwall | 30 | 10 | 10 | 10 | 30 | 27 | 3 | 40 |
| 15 | Preston North EndPreston | 30 | 8 | 13 | 9 | 33 | 38 | -5 | 37 |
| 16 | Oxford UnitedOxford Utd | 31 | 9 | 10 | 12 | 34 | 45 | -11 | 37 |
| 17 | Swansea CitySwansea | 30 | 9 | 7 | 14 | 32 | 42 | -10 | 34 |
| 18 | Stoke CityStoke | 30 | 7 | 11 | 12 | 28 | 37 | -9 | 32 |
| 19 | Cardiff CityCardiff | 30 | 7 | 10 | 13 | 33 | 51 | -18 | 31 |
| 20 | Portsmouth | 31 | 7 | 9 | 15 | 37 | 54 | -17 | 30 |
| 21 | Hull City | 30 | 7 | 8 | 15 | 31 | 40 | -9 | 29 |
| 22 | Derby CountyDerby | 31 | 7 | 7 | 17 | 33 | 42 | -9 | 28 |
| 23 | Luton TownLuton | 30 | 7 | 6 | 17 | 30 | 49 | -19 | 27 |
| 24 | Plymouth ArgylePlymouth | 30 | 5 | 10 | 15 | 29 | 63 | -34 | 25 |
| > Championship Full Table | |||||||||
