The 21-year-old American has found opportunities hard to come by at St Andrew's this season, having made just one substitute appearance in all competitions.
As a result, he has been granted permission to join League One outfit Colchester until January 1.
Packwood, who spent part of last term on loan with Bristol Rovers, could make his U's debut against MK Dons on Saturday afternoon.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Wrexham | 7 | 5 | 1 | 1 | 14 | 6 | 8 | 16 |
| 2 | Birmingham CityBirmingham | 6 | 5 | 1 | 0 | 13 | 6 | 7 | 16 |
| 3 | Barnsley | 7 | 4 | 1 | 2 | 12 | 10 | 2 | 13 |
| 4 | Charlton AthleticCharlton | 7 | 4 | 1 | 2 | 7 | 5 | 2 | 13 |
| 5 | Huddersfield TownHuddersfield | 6 | 4 | 0 | 2 | 11 | 6 | 5 | 12 |
| 6 | Stockport CountyStockport | 6 | 3 | 2 | 1 | 10 | 6 | 4 | 11 |
| 7 | Lincoln CityLincoln | 6 | 3 | 2 | 1 | 10 | 6 | 4 | 11 |
| 8 | Mansfield TownMansfield | 6 | 3 | 2 | 1 | 11 | 11 | 0 | 11 |
| 9 | Wycombe WanderersWycombe | 6 | 3 | 1 | 2 | 12 | 10 | 2 | 10 |
| 10 | Peterborough UnitedPeterborough | 6 | 3 | 1 | 2 | 10 | 9 | 1 | 10 |
| 11 | Exeter CityExeter | 6 | 3 | 0 | 3 | 8 | 6 | 2 | 9 |
| 12 | Northampton TownNorthampton | 6 | 2 | 2 | 2 | 8 | 7 | 1 | 8 |
| 13 | Blackpool | 6 | 2 | 2 | 2 | 11 | 13 | -2 | 8 |
| 14 | Wigan AthleticWigan | 6 | 2 | 1 | 3 | 6 | 5 | 1 | 7 |
| 15 | Stevenage | 6 | 2 | 1 | 3 | 5 | 5 | 0 | 7 |
| 16 | Reading | 6 | 2 | 1 | 3 | 7 | 10 | -3 | 7 |
| 17 | Crawley TownCrawley | 6 | 2 | 1 | 3 | 5 | 8 | -3 | 7 |
| 18 | Bolton WanderersBolton | 6 | 2 | 1 | 3 | 7 | 11 | -4 | 7 |
| 19 | Bristol Rovers | 7 | 2 | 1 | 4 | 6 | 11 | -5 | 7 |
| 20 | Leyton Orient | 6 | 2 | 0 | 4 | 7 | 9 | -2 | 6 |
| 21 | Rotherham UnitedRotherham | 7 | 1 | 3 | 3 | 5 | 9 | -4 | 6 |
| 22 | Burton Albion | 6 | 0 | 4 | 2 | 8 | 10 | -2 | 4 |
| 23 | Shrewsbury TownShrewsbury | 7 | 1 | 0 | 6 | 5 | 12 | -7 | 3 |
| 24 | Cambridge UnitedCambridge | 6 | 0 | 1 | 5 | 6 | 13 | -7 | 1 |
| > League One Full Table | |||||||||
