Dr Muttaqa Rabe-Darma, the President of Umaru Musa Yar’adua Human Development Centre, has described the late president and former Katsina State Governor as an excellent transformation leader. He disclosed this on Sunday in Katsina during the 13th Umaru Musa Yar’adua day memorial lecture, organised by the ‘Katsina State First Youth’, Fix Under Grassroots Aids Initiative.