The Eagles have confirmed that the ex-Netherlands international, who previously managed Ajax and Inter, will be their new man in charge
Crystal Palace have announced former Ajax coach and Barcelona player Frank de Boer as their new manager.
The Dutchman has been without a job since getting sacked by Inter last October, with the club struggling for form and winning only once in five Serie A games.
Palace have been looking for someone to replace Sam Allardyce, who from retired from football management after guiding the club to Premier League safety in May.