The 34-year-old, who has also played for Aston Villa in his career, has been searching for a new club after coming to the end of his contract with MLS side Colorado Rapids last year.
According to talkSPORT, Knight is hopeful that Watford manager Slavisa Jokanovic will offer him a permanent contract at the Championship club.
The Hornets are currently sixth in the league table.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | West Bromwich AlbionWest Brom | 7 | 5 | 1 | 1 | 12 | 5 | 7 | 16 |
| 2 | Sunderland | 7 | 5 | 0 | 2 | 14 | 6 | 8 | 15 |
| 3 | Blackburn RoversBlackburn | 7 | 4 | 3 | 0 | 14 | 6 | 8 | 15 |
| 4 | Burnley | 7 | 4 | 2 | 1 | 13 | 4 | 9 | 14 |
| 5 | Leeds UnitedLeeds | 7 | 4 | 2 | 1 | 12 | 4 | 8 | 14 |
| 6 | Sheffield UnitedSheff Utd | 7 | 4 | 3 | 0 | 9 | 3 | 6 | 13 |
| 7 | Watford | 7 | 4 | 1 | 2 | 12 | 10 | 2 | 13 |
| 8 | Middlesbrough | 7 | 3 | 2 | 2 | 8 | 5 | 3 | 11 |
| 9 | Swansea CitySwansea | 7 | 3 | 2 | 2 | 8 | 5 | 3 | 11 |
| 10 | Norwich CityNorwich | 7 | 3 | 2 | 2 | 11 | 9 | 2 | 11 |
| 11 | Oxford UnitedOxford Utd | 7 | 3 | 1 | 3 | 10 | 8 | 2 | 10 |
| 12 | Hull City | 7 | 2 | 3 | 2 | 9 | 8 | 1 | 9 |
| 13 | Derby CountyDerby | 7 | 3 | 0 | 4 | 10 | 10 | 0 | 9 |
| 14 | Bristol City | 7 | 2 | 3 | 2 | 9 | 13 | -4 | 9 |
| 15 | Millwall | 7 | 2 | 2 | 3 | 12 | 10 | 2 | 8 |
| 16 | Plymouth ArgylePlymouth | 7 | 2 | 2 | 3 | 8 | 11 | -3 | 8 |
| 17 | Queens Park RangersQPR | 7 | 1 | 4 | 2 | 8 | 11 | -3 | 7 |
| 18 | Sheffield WednesdaySheff Weds | 7 | 2 | 1 | 4 | 9 | 14 | -5 | 7 |
| 19 | Luton TownLuton | 7 | 2 | 1 | 4 | 6 | 11 | -5 | 7 |
| 20 | Stoke CityStoke | 7 | 2 | 0 | 5 | 4 | 11 | -7 | 6 |
| 21 | Coventry CityCoventry | 7 | 1 | 2 | 4 | 6 | 11 | -5 | 5 |
| 22 | Preston North EndPreston | 7 | 1 | 2 | 4 | 4 | 12 | -8 | 5 |
| 23 | Portsmouth | 7 | 0 | 4 | 3 | 7 | 13 | -6 | 4 |
| 24 | Cardiff CityCardiff | 7 | 0 | 1 | 6 | 2 | 17 | -15 | 1 |
| > Championship Full Table | |||||||||
