The 23-year-old has one year left on his current deal after joining from Chelsea in August 2010.
However, he has now refused to commit himself to the Welsh side, according to The Mirror.
Sinclair scored eight goals last season as the Swans finished 11th in the Premier League table.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Leeds UnitedLeeds | 31 | 19 | 9 | 3 | 62 | 19 | 43 | 66 |
| 2 | Burnley | 31 | 16 | 13 | 2 | 37 | 9 | 28 | 61 |
| 3 | Sheffield UnitedSheff Utd | 30 | 19 | 6 | 5 | 41 | 21 | 20 | 61 |
| 4 | Sunderland | 30 | 16 | 10 | 4 | 45 | 26 | 19 | 58 |
| 5 | Blackburn RoversBlackburn | 31 | 13 | 6 | 12 | 35 | 31 | 4 | 45 |
| 6 | West Bromwich AlbionWest Brom | 30 | 10 | 14 | 6 | 39 | 27 | 12 | 44 |
| 7 | Middlesbrough | 30 | 12 | 8 | 10 | 49 | 39 | 10 | 44 |
| 8 | Norwich CityNorwich | 30 | 11 | 9 | 10 | 49 | 42 | 7 | 42 |
| 9 | Bristol City | 30 | 10 | 12 | 8 | 38 | 35 | 3 | 42 |
| 10 | Sheffield WednesdaySheff Weds | 30 | 11 | 9 | 10 | 43 | 46 | -3 | 42 |
| 11 | Coventry CityCoventry | 31 | 11 | 8 | 12 | 41 | 40 | 1 | 41 |
| 12 | Watford | 30 | 12 | 5 | 13 | 40 | 42 | -2 | 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 | 30 | 7 | 9 | 14 | 36 | 52 | -16 | 30 |
| 21 | Hull City | 30 | 7 | 8 | 15 | 31 | 40 | -9 | 29 |
| 22 | Derby CountyDerby | 30 | 7 | 6 | 17 | 32 | 41 | -9 | 27 |
| 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 | |||||||||
