The League Two leaders are said to be keen on the 28-year-old to boost their prospects of earning automatic promotion back into the third tier.
Dagnall, who joined Orient last January, has netted seven League One goals this season and, according to the Daily Mail, Salop will return with one final bid before the 11pm deadline.
His contract expires in 2016.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Birmingham CityBirmingham | 7 | 6 | 1 | 0 | 16 | 8 | 8 | 19 |
| 2 | Wrexham | 8 | 5 | 2 | 1 | 14 | 6 | 8 | 17 |
| 3 | Lincoln CityLincoln | 7 | 4 | 2 | 1 | 12 | 6 | 6 | 14 |
| 4 | Blackpool | 8 | 4 | 2 | 2 | 16 | 13 | 3 | 14 |
| 5 | Mansfield TownMansfield | 7 | 4 | 2 | 1 | 13 | 11 | 2 | 14 |
| 6 | Barnsley | 8 | 4 | 2 | 2 | 13 | 11 | 2 | 14 |
| 7 | Wycombe WanderersWycombe | 7 | 4 | 1 | 2 | 14 | 11 | 3 | 13 |
| 8 | Charlton AthleticCharlton | 8 | 4 | 1 | 3 | 7 | 6 | 1 | 13 |
| 9 | Stockport CountyStockport | 7 | 3 | 3 | 1 | 11 | 7 | 4 | 12 |
| 10 | Huddersfield TownHuddersfield | 8 | 4 | 0 | 4 | 12 | 10 | 2 | 12 |
| 11 | Stevenage | 8 | 3 | 2 | 3 | 6 | 5 | 1 | 11 |
| 12 | Peterborough UnitedPeterborough | 8 | 3 | 2 | 3 | 14 | 14 | 0 | 11 |
| 13 | Exeter CityExeter | 7 | 3 | 1 | 3 | 8 | 6 | 2 | 10 |
| 14 | Bolton WanderersBolton | 7 | 3 | 1 | 3 | 9 | 11 | -2 | 10 |
| 15 | Reading | 7 | 3 | 1 | 3 | 9 | 11 | -2 | 10 |
| 16 | Wigan AthleticWigan | 8 | 2 | 3 | 3 | 6 | 5 | 1 | 9 |
| 17 | Northampton TownNorthampton | 7 | 2 | 2 | 3 | 8 | 9 | -1 | 8 |
| 18 | Leyton Orient | 8 | 2 | 2 | 4 | 9 | 11 | -2 | 8 |
| 19 | Rotherham UnitedRotherham | 8 | 1 | 4 | 3 | 6 | 10 | -4 | 7 |
| 20 | Crawley TownCrawley | 7 | 2 | 1 | 4 | 5 | 10 | -5 | 7 |
| 21 | Bristol Rovers | 8 | 2 | 1 | 5 | 7 | 13 | -6 | 7 |
| 22 | Burton Albion | 7 | 0 | 4 | 3 | 8 | 13 | -5 | 4 |
| 23 | Shrewsbury TownShrewsbury | 8 | 1 | 1 | 6 | 6 | 13 | -7 | 4 |
| 24 | Cambridge UnitedCambridge | 7 | 0 | 1 | 6 | 6 | 15 | -9 | 1 |
| > League One Full Table | |||||||||
