The 27-year-old's previous deal with the Shrimpers expired earlier this summer.
Deegan joined Phil Brown's side before the start of last season after being released by Northampton Town.
Southend start the new campaign with a trip to Fleetwood Town on Saturday.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Aldershot TownAldershot | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2 | AltrinchamAltrincham | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | Barnet | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | Boreham WoodBoreham Wood | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 5 | Bromley | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 6 | Chesterfield | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 7 | Dagenham & RedbridgeDag & Red | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 8 | Dorking WanderersDorking | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 9 | Eastleigh | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 10 | Gateshead | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 11 | Halifax TownHalifax | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 12 | Maidenhead UnitedMaidenhead | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 13 | Maidstone UnitedMaidstone | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 14 | Notts County | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 15 | Oldham AthleticOldham | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 16 | Scunthorpe UnitedScunthorpe | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 17 | Solihull MoorsSolihull | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 18 | Southend UnitedSouthend | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 19 | Torquay UnitedTorquay Utd | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 20 | WealdstoneWealdstone | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 21 | Woking | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 22 | Wrexham | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 23 | Yeovil TownYeovil | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 24 | York City | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| > Full Version | |||||||||
