The 22-year-old played a key role in the club's promotion to the Championship, but has found his opportunities limited in the new campaign.
He scored 11 goals for the Addicks last season, but has yet to get off the mark in four appearances this term.
Wagstaff could make his Orient debut against Bournemouth on Saturday.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Birmingham CityBirmingham | 35 | 25 | 7 | 3 | 58 | 23 | 35 | 82 |
| 2 | Wycombe WanderersWycombe | 35 | 19 | 11 | 5 | 61 | 33 | 28 | 68 |
| 3 | Wrexham | 36 | 20 | 8 | 8 | 50 | 30 | 20 | 68 |
| 4 | Charlton AthleticCharlton | 36 | 18 | 9 | 9 | 47 | 31 | 16 | 63 |
| 5 | Stockport CountyStockport | 36 | 17 | 11 | 8 | 52 | 34 | 18 | 62 |
| 6 | Bolton WanderersBolton | 36 | 18 | 6 | 12 | 59 | 54 | 5 | 60 |
| 7 | Huddersfield TownHuddersfield | 36 | 17 | 7 | 12 | 47 | 33 | 14 | 58 |
| 8 | Reading | 36 | 16 | 10 | 10 | 51 | 45 | 6 | 58 |
| 9 | Leyton Orient | 36 | 16 | 5 | 15 | 51 | 37 | 14 | 53 |
| 10 | Barnsley | 36 | 15 | 7 | 14 | 50 | 51 | -1 | 52 |
| 11 | Blackpool | 36 | 12 | 15 | 9 | 54 | 48 | 6 | 51 |
| 12 | Stevenage | 36 | 13 | 9 | 14 | 34 | 37 | -3 | 48 |
| 13 | Lincoln CityLincoln | 36 | 12 | 10 | 14 | 48 | 45 | 3 | 46 |
| 14 | Rotherham UnitedRotherham | 35 | 12 | 8 | 15 | 39 | 41 | -2 | 44 |
| 15 | Wigan AthleticWigan | 35 | 11 | 10 | 14 | 32 | 34 | -2 | 43 |
| 16 | Exeter CityExeter | 35 | 12 | 7 | 16 | 39 | 50 | -11 | 43 |
| 17 | Bristol Rovers | 36 | 12 | 6 | 18 | 39 | 55 | -16 | 42 |
| 18 | Mansfield TownMansfield | 36 | 11 | 8 | 17 | 41 | 50 | -9 | 41 |
| 19 | Northampton TownNorthampton | 36 | 10 | 11 | 15 | 36 | 53 | -17 | 41 |
| 20 | Peterborough UnitedPeterborough | 35 | 10 | 9 | 16 | 52 | 60 | -8 | 39 |
| 21 | Burton Albion | 36 | 7 | 12 | 17 | 36 | 53 | -17 | 33 |
| 22 | Crawley TownCrawley | 36 | 7 | 9 | 20 | 38 | 66 | -28 | 30 |
| 23 | Cambridge UnitedCambridge | 36 | 7 | 8 | 21 | 35 | 60 | -25 | 29 |
| 24 | Shrewsbury TownShrewsbury | 36 | 7 | 7 | 22 | 34 | 60 | -26 | 28 |
| > League One Full Table | |||||||||
