The USA international has been told that he needs surgery after fracturing his cheekbone during a friendly against MK Dons last week.
The former Manchester United player is now expected to miss the start of the Championship season.
Birmingham get their campaign underway at home to Watford on August 3.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Birmingham CityBirmingham | 38 | 27 | 8 | 3 | 65 | 26 | 39 | 89 |
| 2 | Wrexham | 40 | 23 | 9 | 8 | 56 | 32 | 24 | 78 |
| 3 | Wycombe WanderersWycombe | 39 | 21 | 12 | 6 | 65 | 36 | 29 | 75 |
| 4 | Charlton AthleticCharlton | 40 | 21 | 9 | 10 | 55 | 36 | 19 | 72 |
| 5 | Stockport CountyStockport | 40 | 20 | 11 | 9 | 58 | 36 | 22 | 71 |
| 6 | Bolton WanderersBolton | 39 | 19 | 6 | 14 | 61 | 57 | 4 | 63 |
| 7 | Reading | 39 | 17 | 11 | 11 | 55 | 50 | 5 | 62 |
| 8 | Huddersfield TownHuddersfield | 39 | 18 | 7 | 14 | 52 | 39 | 13 | 61 |
| 9 | Blackpool | 40 | 15 | 15 | 10 | 62 | 51 | 11 | 60 |
| 10 | Leyton Orient | 39 | 18 | 5 | 16 | 55 | 40 | 15 | 59 |
| 11 | Barnsley | 40 | 15 | 9 | 16 | 54 | 57 | -3 | 54 |
| 12 | Lincoln CityLincoln | 40 | 14 | 11 | 15 | 54 | 46 | 8 | 53 |
| 13 | Stevenage | 39 | 13 | 10 | 16 | 35 | 42 | -7 | 49 |
| 14 | Peterborough UnitedPeterborough | 39 | 13 | 9 | 17 | 61 | 66 | -5 | 48 |
| 15 | Rotherham UnitedRotherham | 39 | 13 | 9 | 17 | 44 | 49 | -5 | 48 |
| 16 | Exeter CityExeter | 39 | 13 | 9 | 17 | 42 | 54 | -12 | 48 |
| 17 | Mansfield TownMansfield | 39 | 13 | 8 | 18 | 46 | 54 | -8 | 47 |
| 18 | Wigan AthleticWigan | 38 | 11 | 11 | 16 | 34 | 38 | -4 | 44 |
| 19 | Northampton TownNorthampton | 40 | 10 | 13 | 17 | 38 | 59 | -21 | 43 |
| 20 | Bristol Rovers | 40 | 12 | 6 | 22 | 41 | 65 | -24 | 42 |
| 21 | Burton Albion | 39 | 9 | 12 | 18 | 41 | 56 | -15 | 39 |
| 22 | Crawley TownCrawley | 40 | 9 | 9 | 22 | 47 | 75 | -28 | 36 |
| 23 | Cambridge UnitedCambridge | 40 | 7 | 11 | 22 | 39 | 65 | -26 | 32 |
| 24 | Shrewsbury TownShrewsbury | 39 | 7 | 8 | 24 | 35 | 66 | -31 | 29 |
| > League One Full Table | |||||||||
