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 | Sheffield UnitedSheff Utd | 22 | 15 | 5 | 2 | 32 | 11 | 21 | 48 |
| 2 | Leeds UnitedLeeds | 22 | 13 | 6 | 3 | 41 | 15 | 26 | 45 |
| 3 | Burnley | 22 | 12 | 8 | 2 | 28 | 9 | 19 | 44 |
| 4 | Sunderland | 22 | 12 | 7 | 3 | 34 | 18 | 16 | 43 |
| 5 | Blackburn RoversBlackburn | 21 | 11 | 4 | 6 | 25 | 18 | 7 | 37 |
| 6 | Middlesbrough | 22 | 10 | 5 | 7 | 38 | 28 | 10 | 35 |
| 7 | West Bromwich AlbionWest Brom | 22 | 8 | 11 | 3 | 26 | 16 | 10 | 35 |
| 8 | Watford | 21 | 10 | 4 | 7 | 30 | 28 | 2 | 34 |
| 9 | Sheffield WednesdaySheff Weds | 22 | 9 | 5 | 8 | 28 | 30 | -2 | 32 |
| 10 | Millwall | 21 | 7 | 7 | 7 | 21 | 18 | 3 | 28 |
| 11 | Swansea CitySwansea | 22 | 7 | 6 | 9 | 24 | 24 | 0 | 27 |
| 12 | Bristol City | 22 | 6 | 9 | 7 | 26 | 28 | -2 | 27 |
| 13 | Norwich CityNorwich | 22 | 6 | 8 | 8 | 37 | 34 | 3 | 26 |
| 14 | Queens Park RangersQPR | 22 | 5 | 10 | 7 | 23 | 28 | -5 | 25 |
| 15 | Luton TownLuton | 22 | 7 | 4 | 11 | 25 | 38 | -13 | 25 |
| 16 | Derby CountyDerby | 22 | 6 | 6 | 10 | 27 | 28 | -1 | 24 |
| 17 | Coventry CityCoventry | 22 | 6 | 6 | 10 | 28 | 34 | -6 | 24 |
| 18 | Preston North EndPreston | 22 | 4 | 11 | 7 | 22 | 29 | -7 | 23 |
| 19 | Stoke CityStoke | 22 | 5 | 7 | 10 | 23 | 30 | -7 | 22 |
| 20 | Portsmouth | 20 | 4 | 8 | 8 | 25 | 35 | -10 | 20 |
| 21 | Hull City | 22 | 4 | 7 | 11 | 21 | 31 | -10 | 19 |
| 22 | Cardiff CityCardiff | 21 | 4 | 6 | 11 | 19 | 34 | -15 | 18 |
| 23 | Oxford UnitedOxford Utd | 21 | 4 | 6 | 11 | 21 | 37 | -16 | 18 |
| 24 | Plymouth ArgylePlymouth | 21 | 4 | 6 | 11 | 22 | 45 | -23 | 18 |
| > Championship Full Table | |||||||||
