Mullins spent three months on loan at Meadow Lane last season as he helped the club retain their League One status.
The 35-year-old returned to parent club Birmingham City to contribute to their survival in the Championship, but after being released by the Blues, he has now gone back to Shaun Derry's side.
Mullins, who can also operate in defence, made 16 appearances during his time at County earlier this year.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Doncaster RoversDoncaster | 5 | 4 | 0 | 1 | 10 | 6 | 4 | 12 |
| 2 | Notts County | 5 | 3 | 2 | 0 | 10 | 4 | 6 | 11 |
| 3 | BarrowBarrow | 5 | 3 | 1 | 1 | 7 | 2 | 5 | 10 |
| 4 | Gillingham | 5 | 3 | 1 | 1 | 6 | 2 | 4 | 10 |
| 5 | Bradford CityBradford | 5 | 3 | 1 | 1 | 8 | 5 | 3 | 10 |
| 6 | Walsall | 5 | 3 | 0 | 2 | 7 | 3 | 4 | 9 |
| 7 | AFC Wimbledon | 4 | 3 | 0 | 1 | 6 | 4 | 2 | 9 |
| 8 | Newport CountyNewport | 5 | 3 | 0 | 2 | 10 | 9 | 1 | 9 |
| 9 | Chesterfield | 5 | 2 | 2 | 1 | 9 | 4 | 5 | 8 |
| 10 | Tranmere RoversTranmere | 4 | 2 | 2 | 0 | 3 | 1 | 2 | 8 |
| 11 | Bromley | 5 | 2 | 1 | 2 | 7 | 6 | 1 | 7 |
| 12 | Port Vale | 5 | 2 | 1 | 2 | 8 | 8 | 0 | 7 |
| 13 | Crewe AlexandraCrewe | 5 | 2 | 1 | 2 | 3 | 7 | -4 | 7 |
| 14 | MK Dons | 5 | 2 | 0 | 3 | 5 | 5 | 0 | 6 |
| 15 | Cheltenham TownCheltenham | 5 | 2 | 0 | 3 | 7 | 8 | -1 | 6 |
| 16 | Grimsby Town | 5 | 2 | 0 | 3 | 7 | 10 | -3 | 6 |
| 17 | Fleetwood TownFleetwood | 4 | 1 | 2 | 1 | 3 | 3 | 0 | 5 |
| 18 | Colchester UnitedColchester | 5 | 1 | 2 | 2 | 6 | 7 | -1 | 5 |
| 19 | Salford City | 4 | 1 | 2 | 1 | 2 | 3 | -1 | 5 |
| 20 | Harrogate TownHarrogate | 5 | 1 | 1 | 3 | 4 | 7 | -3 | 4 |
| 21 | Swindon TownSwindon | 5 | 0 | 3 | 2 | 3 | 8 | -5 | 3 |
| 22 | Carlisle UnitedCarlisle | 5 | 1 | 0 | 4 | 4 | 11 | -7 | 3 |
| 23 | Accrington StanleyAccrington | 5 | 0 | 2 | 3 | 6 | 13 | -7 | 2 |
| 24 | Morecambe | 5 | 0 | 0 | 5 | 0 | 5 | -5 | 0 |
| > League Two Full Table | |||||||||
