The 28-year-old, who has been with Hull City for the first half of the season, will join the Championship side for the remainder of the campaign.
The two sides have been trying to complete the deal throughout the day, but had to wait for Hull to cancel their loan before the move could be finalised.
Graham has scored just once during his time at the KC Stadium.
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 | |||||||||
