Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 01/2026 - 06/2027 |  | Celtic FC |  Scotland | Manager |
| 10/2025 - 12/2025 | | Celtic FC | Scotland | Manager |
| 01/2019 - 06/2019 |  | Nottingham Forest |  England | Manager |
| 12/2011 - 03/2013 |  | Sunderland AFC | England | Manager |
| 08/2006 - 08/2010 |  | Aston Villa | England | Manager |
| 07/2000 - 05/2005 | | Celtic FC | Scotland | Manager |
| 12/1995 - 06/2000 |  | Leicester City | England | Manager |
| 07/1995 - 12/1995 |  | Norwich City | England | Manager |
| 02/1990 - 06/1995 |  | Wycombe Wanderers | England | Manager |
National teams managed
| Season | Team | Position | |
|---|---|---|---|
| Nations League B 2018/2019 |  | Ireland | Manager |
| Friendlies 2018 | | Ireland | Manager |
| Friendlies 2017 | | Ireland | Manager |
| WC Qualifiers Play-offs 2017 | | Ireland | Manager |
| WC Qualifiers Europe 2016/2017 | | Ireland | Manager |
| EURO 2016 in Frankreich | | Ireland | Manager |
| Friendlies 2016 | | Ireland | Manager |
| Friendlies 2015 | | Ireland | Manager |
| EURO Qualifiers 2014/2015 | | Ireland | Manager |
| Friendlies 2014 | | Ireland | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/1985 - 06/1986 |  | Fulham FC | England | Midfield | |
| 07/1983 - 06/1985 |  | Notts County | England | Midfield | |
| 07/1982 - 06/1983 | | Norwich City | England | Midfield | |
| 07/1981 - 06/1982 |  | Manchester City | England | Midfield | |
| 02/1981 - 06/1981 | | Norwich City | England | Midfield | |
| 10/1971 - 02/1981 | | Nottingham Forest | England | Midfield | |
| 07/1969 - 09/1971 |  | Lisburn Distillery |  Northern Ireland | Midfield |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Intercontinental Cup | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
 | Champions League | 13 | 13 | - | 1 | 1.102 | 1 | - | - | 1 | - | - | » All matches |
| UEFA Super Cup | 3 | 2 | 1 | - | 202 | - | - | - | 1 | - | - | » All matches |
| Cup Winners Cup | 2 | 2 | - | - | 180 | 1 | - | - | - | - | - | » All matches |
| Premier League | 234 | 219 | 15 | 10 | 19.942 | 36 | - | - | - | - | 1 | » All matches |
| League Cup | 4 | 4 | - | - | 390 | - | - | - | - | - | - | » All matches |
| Total | 257 | 241 | 16 | 11 | 21.906 | 38 | - | - | 2 | - | 1 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| World Cup | 5 | 5 | - | 1 | 438 | - | - | - | - | - | - | » All matches |
| WC Qualifiers Europe | 15 | 15 | - | 1 | 1.306 | 2 | - | - | - | - | - | » All matches |
| Friendlies | 23 | 20 | 3 | 3 | 1.974 | 4 | - | - | - | - | - | » All matches |
| EURO Qualifiers | 20 | 17 | 3 | 2 | 1.631 | 3 | - | - | - | - | - | » All matches |
| Total | 63 | 57 | 6 | 7 | 5.349 | 9 | - | - | - | - | - |