 In 1995, during a dispute for control of Chelsea FC between the sitting chairman Ken Bates and Matthew Harding, it was revealed in the media that Marwan owned 1.5 million shares at the club.Marwan continued working for the Mossad until 1998 and was handled throughout the period by his single case officer, Dubi.His identity as a spy for Israel was revealed in December 2002 by the London-based Israeli historian Ahron Bregman, who claimed that Marwan was a double agent who had deceived the Israelis.