[Getty Images]Newcastle CEO David Hopkinson says Kevin Keegan's legacy "demands" a physical tribute such as a statue or the naming of a stand after the club legend.Keegan passed away on Monday at the age of 75.Speaking from outside St James' Park, Hopkinson said he was "moved" by the number of fans who has turned out to mourn Keegan already."Kevin's impact on this community is evident in the faces of everyone here," Hopkinson told BBC Newcastle."We didn't plan this, these people have shown up to