The 22-year-old Belgian is under contract until the summer of 2010, with the club hoping to prolong his stay to June 2012.
But Vermaelen told Sporza: "I have been negotiating with the club for a while already, but I am not in a hurry. At the moment nothing has been put on paper. If other clubs are interested in me, I don´t know. That´s the job of my agent."
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