I thought the only legal issues may revolve around whether his release clause only pertains to Belgian window or other windows..? I can't think of any other legal issues that could arise. However, can Genk report us to FIFA for tapping up their player? I know it happens all the time, but Genk might be very compelled to complain, and it certainly seems like we might have been in discussions with him and his agent, before speaking to the club.