The Swedish right winger leaves after 142 matches and 39 goals.
"We have reached a point in our collaboration where it was natural to talk about the next step. During the conversation, it became clear that Jordan and his family were interested in trying a new adventure after 3.5 years in Copenhagen," FCK's football director Kristjaan Speakman told the club's website.
The 29-year-old says that he has achieved everything he dreamed of and much more at the Copenhagen club.
"Now I have been given a new opportunity, but it is with mixed feelings that I say goodbye."
What do you think?