The Swedish international, who has scored 19 times in 71 international appearances, will provide backup for a strikeforce that includes Ricky Van Wolfswinkel, Gary Hooper and Luciano Becchio.
"I can confirm [that] Johan moves to England. We agreed with Norwich, Johan and his agent Anders Wallsten. We wish him good luck," Galatasaray technical director Bulent Tulun told Expressen.
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