Allan McGregor has completed his move to Besiktas, signing a two-year deal with the club.
The former Rangers goalkeeper completed a medical in Istanbul on Thursday afternoon.
He is expected to be unveiled by the Super Lig side at a news conference on Friday, having agreed a deal which will see him paid just over £18,000 a week.
"I spent 45 minutes to an hour with Allan last night," the head of Besiktas' football committee, Tamer Kiran, told STV. "He is a very good professional, very fit and experienced. We believe he will deliver our team's objectives."
It is believed McGregor has mulled over the move for over two weeks, having originally agreed terms to move to Turkey as revealed by STV on July 10.
Besiktas will now apply to the Turkish FA for an International Transfer Certificate for the transfer to go through.
They are likely to have problems gaining international clearance, however, as Charles Green believes his new Rangers company are due a transfer fee.
McGregor was one of nine players who refused to transfer their contracts to Sevco Scotland Limited, exercising his right under TUPE regulations to terminate his deal.
FIFA have already issued temporary ITCs for a number of his former team-mates, meaning the keeper could be freed up to play pre-season and competitive games until the dispute is settled.
The goalkeeper, who has 20 international caps and is Scotland's number one, had been a Rangers player since 1998, making over 200 appearances for the Ibrox side and winning three league titles and eight cups.
Speaking in the Turkish press, Kiran also revealed his club had failed in a move for Sone Aluko, who has since joined Hull.
"We also wanted Sone to sign for Besiktas," he said. "But he did not want to come to Turkey."
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