Wigan manager Uwe Rosler has revealed his sympathy for James McArthur after his move to Leicester City collapsed.
Jose Mourinho praised Mattia Destro amid reports the Chelsea manager is lining up a move for the Roma striker.
The 32-year-old centre-back, who can number Chelsea, Stuttgart and Sporting Lisbon among his former clubs, has signed a one-year contract at De Kuip after leaving Brondby.
A statement published on Feyenoord's official website revealed Boulahrouz's deal in Rotterdam includes the option of a further year.
He left RKC Waalwijk for Hamburg in 2004 and made 35 appearances for Holland across eight years.