Out of contract
The 25-year-old, capped three times by Belgium, was set to be out of contract this summer after having joined the Arnhem side from ADO Den Haag in 2005. Prior to that, he was a trainee at Feyenoord, but made his professional debut in 2001/02 while on loan at their Rotterdam neighbours SBV Excelsior, helping them win promotion to the top flight.
He has now played 149 Eredivisie games, scoring seven times, and AZ technical director Marcel Brands was thrilled to complete the signing, saying: "Gill is a player who has been on our wanted list for quite some time. He was even more interesting as a free transfer. After losing Grétar Steinsson [to Bolton Wanderers FC], he is the right player to play right-back at AZ." AZ finished eleventh in the 18-team Eredivisie this season.
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