Footballer; who has played for Norwich City (1996-2000), Coventry City (2000-01), Newcastle United (2001-05), Celtic (2005 - Loan), Blackburn Rovers (2005-06), Liverpool (2006-07, 2011-12), West Ham United (2007-09), Manchester City (2009-11), and Cardiff City (2010-11 - Loan, 2012-Present).