| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 1986 | Torres | - | 88 | 21 | 1989 | (Player) |
| 1986 | - | - | 31 | 10 | 1987 | (Player) |
| 1987 | Torres | - | 88 | 21 | 1989 | (Player) |
| 1989 | Napoli | - | 105 | 32 | 1993 | (Player) |
| 1993 | Parma | - | 102 | 49 | 1996 | (Player) |
| 1996 | Chelsea | £4,500,000 | 229 | 59 | 2003 | (Player) |
| 2003 | Cagliari | Free | 0 | 2006 | (Player) | |
| 2008 | West Ham United | - | 2010 | (Manager) | ||
| 2012 | Watford | - | 2013 | (Manager) | ||
| 2014 | Cagliari | - | 2015 | (Manager) | ||
| 2015 | Al-Arabi | - | 2016 | (Manager) | ||
| 2016 | Birmingham City | - | 2017 | (Manager) |