Ridvan Yilmaz has joined Rangers on a five-year deal from Besiktas.
The Ibrox outfit have moved quickly to land replacements for Calvin Bassey, who played centrally or at left-back.
Rangers had been in talks about signing the Turkey international for a fee of £3.4 million, which could rise to £5 million with add-ons.
The 21-year-old was coveted by a number of clubs in Europe, but he was clear that he wanted to join Giovanni van Bronckhorst’s squad.
Yilmaz told the club’s official website: “I am delighted to be joining a club the size of Rangers and am really looking forward to meeting my new team-mates.
“This is a club who have shown they can compete against some of the best teams in Europe, and I am really excited by the challenges we have ahead of us.
“I have heard so much too about the Rangers supporters and I cannot wait to play in front of them for the first time.
“This is a club who have shown they can compete against some of the best teams in Europe, and I am really excited by the challenges we have ahead of us.