Albion have completed the free transfer of Kemy Agustien from Premier League Swansea City.
The 26-year-old midfielder passed his medical and signed a two-year deal on Saturday, before the club received international clearance today.
A former Holland under-21 international, Agustien began his career with Willem II in the Eredivisie before spending four years with another Dutch top tier side AZ Alkmaar.
During his years with AZ, Agustien spent much of his time out on loan, including a spell with Birmingham City in 2008/09 when the club achieved promotion back to the top flight.
The midfielder spent 2009/10 on loan at RKC Waalwijk before signing on for the Swans in 2010, going on to make 31 Premier League appearances.