The 30-year-old has been without a club since leaving Lincoln, but has earned a short stay at Portman Road with the chance of extending it further.
Wilson, who has won one cap for Wales, has been on trial with Paul Lambert's men for the last fortnight, playing friendlies against Colchester, Notts County and Cambridge.
He could make his debut in the League One opener against Burton on Saturday.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Liverpool | 22 | 16 | 5 | 1 | 54 | 21 | 33 | 53 |
| 2 | Arsenal | 23 | 13 | 8 | 2 | 44 | 21 | 23 | 47 |
| 3 | Nottingham ForestNott'm Forest | 23 | 13 | 5 | 5 | 33 | 27 | 6 | 44 |
| 4 | Manchester CityMan City | 23 | 12 | 5 | 6 | 47 | 30 | 17 | 41 |
| 5 | Newcastle UnitedNewcastle | 23 | 12 | 5 | 6 | 41 | 27 | 14 | 41 |
| 6 | Chelsea | 23 | 11 | 7 | 5 | 45 | 30 | 15 | 40 |
| 7 | Bournemouth | 23 | 11 | 7 | 5 | 41 | 26 | 15 | 40 |
| 8 | Aston Villa | 23 | 10 | 7 | 6 | 34 | 35 | -1 | 37 |
| 9 | Brighton & Hove AlbionBrighton | 23 | 8 | 10 | 5 | 35 | 31 | 4 | 34 |
| 10 | Fulham | 23 | 8 | 9 | 6 | 34 | 31 | 3 | 33 |
| 11 | Brentford | 23 | 9 | 4 | 10 | 42 | 40 | 2 | 31 |
| 12 | Manchester UnitedMan Utd | 23 | 8 | 5 | 10 | 28 | 32 | -4 | 29 |
| 13 | Crystal Palace | 23 | 6 | 9 | 8 | 26 | 30 | -4 | 27 |
| 14 | West Ham UnitedWest Ham | 23 | 7 | 6 | 10 | 28 | 44 | -16 | 27 |
| 15 | Tottenham HotspurSpurs | 23 | 7 | 3 | 13 | 46 | 37 | 9 | 24 |
| 16 | Everton | 22 | 5 | 8 | 9 | 19 | 28 | -9 | 23 |
| 17 | Leicester CityLeicester | 23 | 4 | 5 | 14 | 25 | 49 | -24 | 17 |
| 18 | Wolverhampton WanderersWolves | 23 | 4 | 4 | 15 | 32 | 52 | -20 | 16 |
| 19 | Ipswich TownIpswich | 23 | 3 | 7 | 13 | 21 | 47 | -26 | 16 |
| 20 | Southampton | 23 | 1 | 3 | 19 | 16 | 53 | -37 | 6 |
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