Frank de Boer joined Turkish club Galatasaray

"Frank de Boer is at Galatasaray," the Web site said, adding the two-year contract was signed following two days of talks in Amsterdam.

The Turkish daily Hurriyet put the deal at ?1.5 million (US$1.7 million).

De Boer, 33, played for the Dutch club Ajax between 1988 and 1999 before transferring to Barcelona, which failed to renew his contract in June.

He is the twin brother of Rangers midfielder Ronald De Boer.