Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 01/2023 - 04/2023 |  | Blackpool FC |  England | Manager |
| 01/2021 - 10/2021 |  | Cardiff City |  Wales | Manager |
| 11/2020 - 01/2021 |  | APOEL Nikosia |  Cyprus | Manager |
| 11/2018 - 04/2020 |  | Ireland |  Ireland | Manager |
| 11/2012 - 04/2018 |  | Ipswich Town | England | Manager |
| 07/2006 - 02/2012 |  | Wolverhampton Wanderers | England | Manager |
| 03/2003 - 03/2006 |  | Sunderland AFC | England | Manager |
| 03/1992 - 02/1996 |  | Millwall FC | England | Manager |
| 02/1996 - 07/1990 | | Ireland | Ireland | Manager |
National teams managed
| Season | Team | Position | |
|---|---|---|---|
| Friendlies 2020 | | Ireland | Manager |
| EURO Qualifiers 2019/2020 | | Ireland | Manager |
| Friendlies 2019 | | Ireland | Manager |
| Friendlies 2018 | | Ireland | Manager |
| EURO Qualifiers 2002/2003 | | Ireland | Manager |
| World Cup 2002 Japan/South Korea | | Ireland | Manager |
| Friendlies 2002 | | Ireland | Manager |
| Friendlies 2001 | | Ireland | Manager |
| WC Qualifiers Play-offs 2001 | | Ireland | Manager |
| WC Qualifiers Europe 2000/2001 | | Ireland | Manager |
| Friendlies 2000 | | Ireland | Manager |
| Friendlies 1999 | | Ireland | Manager |
| EURO Qualifiers 1998/1999 | | Ireland | Manager |
| Friendlies 1998 | | Ireland | Manager |
| Friendlies 1997 | | Ireland | Manager |
| WC Qualifiers Play-offs 1997 | | Ireland | Manager |
| WC Qualifiers Europe 1996/1997 | | Ireland | Manager |
| Friendlies 1996 | | Ireland | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 03/1990 - 06/1992 | | Millwall FC | England | Defence | |
| 07/1989 - 02/1990 |  | Olympique Lyonnais |  France | Defence | |
| 07/1987 - 06/1989 |  | Celtic FC |  Scotland | Defence | |
| 07/1983 - 06/1987 |  | Manchester City | England | Defence | |
| 07/1977 - 06/1983 |  | Barnsley FC | England | Defence |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 4 | 4 | - | - | 360 | - | - | - | 1 | - | - | » All matches |
| Europa League | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Premier League | 83 | 83 | - | 2 | 7.411 | 1 | - | - | - | - | - | » All matches |
| FA Cup | 6 | 6 | - | - | 570 | - | - | - | - | - | - | » All matches |
| League Cup | 8 | 8 | - | - | 720 | - | - | - | - | - | - | » All matches |
| Ligue 1 | 10 | 10 | - | 1 | 846 | 1 | - | - | - | - | 1 | » All matches |
| Total | 112 | 112 | - | 3 | 9.997 | 2 | - | - | 1 | - | 1 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 5 | 5 | - | - | 480 | - | - | - | - | - | - | » All matches |
| WC Qualifiers Europe | 10 | 9 | 1 | - | 850 | - | - | - | 1 | - | - | » All matches |
| Friendlies | 30 | 29 | 1 | 3 | 2.537 | 2 | - | - | - | - | - | » All matches |
| EURO | 3 | 3 | - | - | 270 | - | - | 1 | - | - | - | » All matches |
| EURO Qualifiers | 9 | 9 | - | - | 810 | - | - | - | 1 | - | - | » All matches |
| Total | 57 | 55 | 2 | 3 | 4.947 | 2 | - | - | 2 | - | - |