Richardson, 27, is understood to be keen on a move to the South of England, despite Sunderland's impressive second half to the campaign.
McDermott will start the bidding at £2m, according to The Sun, as he prepares his side for possible Premier League football.
Reading sit top of the Championship with three games to play.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Birmingham CityBirmingham | 28 | 20 | 6 | 2 | 50 | 19 | 31 | 66 |
| 2 | Wycombe WanderersWycombe | 29 | 17 | 8 | 4 | 55 | 30 | 25 | 59 |
| 3 | Wrexham | 29 | 16 | 7 | 6 | 43 | 25 | 18 | 55 |
| 4 | Stockport CountyStockport | 31 | 15 | 9 | 7 | 47 | 30 | 17 | 54 |
| 5 | Charlton AthleticCharlton | 30 | 14 | 8 | 8 | 40 | 29 | 11 | 50 |
| 6 | Huddersfield TownHuddersfield | 29 | 14 | 7 | 8 | 41 | 26 | 15 | 49 |
| 7 | Leyton Orient | 29 | 14 | 5 | 10 | 43 | 25 | 18 | 47 |
| 8 | Bolton WanderersBolton | 30 | 14 | 5 | 11 | 47 | 46 | 1 | 47 |
| 9 | Reading | 30 | 13 | 7 | 10 | 44 | 42 | 2 | 46 |
| 10 | Barnsley | 30 | 12 | 7 | 11 | 42 | 41 | 1 | 43 |
| 11 | Blackpool | 30 | 9 | 13 | 8 | 42 | 41 | 1 | 40 |
| 12 | Lincoln CityLincoln | 30 | 10 | 10 | 10 | 36 | 35 | 1 | 40 |
| 13 | Stevenage | 29 | 11 | 7 | 11 | 28 | 30 | -2 | 40 |
| 14 | Rotherham UnitedRotherham | 30 | 10 | 8 | 12 | 34 | 35 | -1 | 38 |
| 15 | Mansfield TownMansfield | 29 | 11 | 4 | 14 | 35 | 38 | -3 | 37 |
| 16 | Wigan AthleticWigan | 28 | 9 | 7 | 12 | 27 | 28 | -1 | 34 |
| 17 | Northampton TownNorthampton | 30 | 8 | 9 | 13 | 29 | 45 | -16 | 33 |
| 18 | Exeter CityExeter | 29 | 9 | 5 | 15 | 33 | 46 | -13 | 32 |
| 19 | Bristol Rovers | 29 | 9 | 5 | 15 | 29 | 45 | -16 | 32 |
| 20 | Peterborough UnitedPeterborough | 30 | 8 | 6 | 16 | 46 | 57 | -11 | 30 |
| 21 | Shrewsbury TownShrewsbury | 30 | 7 | 6 | 17 | 31 | 50 | -19 | 27 |
| 22 | Crawley TownCrawley | 29 | 7 | 6 | 16 | 33 | 53 | -20 | 27 |
| 23 | Burton Albion | 30 | 5 | 11 | 14 | 31 | 45 | -14 | 26 |
| 24 | Cambridge UnitedCambridge | 30 | 5 | 8 | 17 | 30 | 55 | -25 | 23 |
| > League One Full Table | |||||||||
