Watford have announced the signing of Italy international Marco Motta, subject to international clearance.
Mark Noble has signed a new deal with West Ham which will keep him at the club until the summer of 2020.
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.