The draw was held on Tuesday , 9 October 2007 at 12:00 CET in Nyon , Switzerland . It was conducted by UEFA 's director of professional football Giorgio Marchetti and Michele Centenaro , UEFA 's head of club competitions . The draw , which was conducted by UEFA 's director of professional football Giorgio Marchetti and Michele Centenaro , UEFA 's head of club competitions , was held on Tuesday , 9 October 2007 at 12:00 CET in Nyon , Switzerland .