The 31-year-old is expected to leave the Keepmoat Stadium for free at the end of the season after the club was relegated to League One.
Leeds boss Neil Warnock is now trying to secure the former Senegal international's services, according to Sky Sports News.
Diouf joined Doncaster at the end of 2011 following two years at Blackburn Rovers.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Leeds UnitedLeeds | 26 | 15 | 8 | 3 | 48 | 19 | 29 | 53 |
| 2 | Burnley | 26 | 14 | 10 | 2 | 31 | 9 | 22 | 52 |
| 3 | Sheffield UnitedSheff Utd | 26 | 16 | 6 | 4 | 36 | 17 | 19 | 52 |
| 4 | Sunderland | 26 | 14 | 8 | 4 | 39 | 22 | 17 | 50 |
| 5 | Middlesbrough | 26 | 11 | 8 | 7 | 43 | 32 | 11 | 41 |
| 6 | West Bromwich AlbionWest Brom | 26 | 9 | 13 | 4 | 32 | 21 | 11 | 40 |
| 7 | Blackburn RoversBlackburn | 25 | 11 | 6 | 8 | 28 | 23 | 5 | 39 |
| 8 | Bristol City | 26 | 9 | 10 | 7 | 33 | 30 | 3 | 37 |
| 9 | Watford | 25 | 11 | 4 | 10 | 35 | 36 | -1 | 37 |
| 10 | Sheffield WednesdaySheff Weds | 26 | 10 | 7 | 9 | 38 | 40 | -2 | 37 |
| 11 | Norwich CityNorwich | 26 | 9 | 9 | 8 | 43 | 37 | 6 | 36 |
| 12 | Swansea CitySwansea | 26 | 9 | 7 | 10 | 30 | 30 | 0 | 34 |
| 13 | Millwall | 25 | 7 | 9 | 9 | 24 | 23 | 1 | 30 |
| 14 | Preston North EndPreston | 26 | 6 | 12 | 8 | 28 | 34 | -6 | 30 |
| 15 | Coventry CityCoventry | 26 | 7 | 8 | 11 | 34 | 37 | -3 | 29 |
| 16 | Queens Park RangersQPR | 25 | 6 | 11 | 8 | 27 | 33 | -6 | 29 |
| 17 | Oxford UnitedOxford Utd | 25 | 7 | 7 | 11 | 28 | 40 | -12 | 28 |
| 18 | Derby CountyDerby | 26 | 7 | 6 | 13 | 31 | 35 | -4 | 27 |
| 19 | Stoke CityStoke | 26 | 6 | 9 | 11 | 24 | 32 | -8 | 27 |
| 20 | Luton TownLuton | 25 | 7 | 4 | 14 | 26 | 42 | -16 | 25 |
| 21 | Portsmouth | 24 | 5 | 8 | 11 | 30 | 41 | -11 | 23 |
| 22 | Hull City | 26 | 5 | 8 | 13 | 25 | 36 | -11 | 23 |
| 23 | Cardiff CityCardiff | 25 | 5 | 8 | 12 | 25 | 40 | -15 | 23 |
| 24 | Plymouth ArgylePlymouth | 25 | 4 | 8 | 13 | 24 | 53 | -29 | 20 |
| > Championship Full Table | |||||||||
