Sir Winfried Franz Wilhelm "Win" Bischoff (born 10 May 1941) is an Anglo-German banker and former chairman of Lloyds Banking Group. He previously served as chairman and interim CEO of Citigroup in 2007. He was succeeded as CEO by Vikram Pandit on 11 December 2007. Bischoff stepped down as chairman on 23 February 2009 and was replaced by Richard Parsons. He has dual British and German citizenship.Bischoff was knighted in 2000.