The left-back is expected to be on the move at the end of the season following Charlton Athletic's relegation to League One.
According to the Birmingham Mail, the Blues see the 22-year-old as the ideal candidate to provide competition for Jonathan Grounds.
Fox has featured on almost 70 occasions for Charlton over the last two seasons.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Wycombe WanderersWycombe | 19 | 13 | 4 | 2 | 43 | 22 | 21 | 43 |
| 2 | Birmingham CityBirmingham | 18 | 13 | 3 | 2 | 34 | 16 | 18 | 42 |
| 3 | Wrexham | 20 | 12 | 5 | 3 | 30 | 13 | 17 | 41 |
| 4 | Huddersfield TownHuddersfield | 19 | 11 | 3 | 5 | 30 | 18 | 12 | 36 |
| 5 | Stockport CountyStockport | 20 | 9 | 6 | 5 | 32 | 21 | 11 | 33 |
| 6 | Reading | 19 | 9 | 4 | 6 | 30 | 28 | 2 | 31 |
| 7 | Barnsley | 20 | 8 | 6 | 6 | 29 | 26 | 3 | 30 |
| 8 | Bolton WanderersBolton | 18 | 9 | 3 | 6 | 28 | 29 | -1 | 30 |
| 9 | Lincoln CityLincoln | 20 | 7 | 7 | 6 | 26 | 25 | 1 | 28 |
| 10 | Blackpool | 19 | 7 | 5 | 7 | 29 | 31 | -2 | 26 |
| 11 | Mansfield TownMansfield | 18 | 7 | 4 | 7 | 22 | 22 | 0 | 25 |
| 12 | Stevenage | 18 | 7 | 4 | 7 | 15 | 17 | -2 | 25 |
| 13 | Peterborough UnitedPeterborough | 19 | 7 | 3 | 9 | 37 | 35 | 2 | 24 |
| 14 | Charlton AthleticCharlton | 19 | 6 | 6 | 7 | 18 | 19 | -1 | 24 |
| 15 | Exeter CityExeter | 19 | 7 | 3 | 9 | 17 | 21 | -4 | 24 |
| 16 | Wigan AthleticWigan | 19 | 6 | 5 | 8 | 17 | 16 | 1 | 23 |
| 17 | Rotherham UnitedRotherham | 18 | 6 | 5 | 7 | 19 | 20 | -1 | 23 |
| 18 | Leyton Orient | 19 | 6 | 4 | 9 | 19 | 20 | -1 | 22 |
| 19 | Northampton TownNorthampton | 20 | 5 | 6 | 9 | 21 | 29 | -8 | 21 |
| 20 | Bristol Rovers | 19 | 6 | 3 | 10 | 17 | 28 | -11 | 21 |
| 21 | Crawley TownCrawley | 19 | 5 | 4 | 10 | 20 | 32 | -12 | 19 |
| 22 | Cambridge UnitedCambridge | 19 | 4 | 5 | 10 | 20 | 31 | -11 | 17 |
| 23 | Burton Albion | 19 | 2 | 6 | 11 | 16 | 30 | -14 | 12 |
| 24 | Shrewsbury TownShrewsbury | 19 | 3 | 2 | 14 | 19 | 39 | -20 | 11 |
| > League One Full Table | |||||||||
