Haber had previously undergone a trial during United's 2006-2007 season in the Premier League, however, then manager Neil Warnock decided not to offer the Maltese keeper a contract In August 2009, after failing to break into the Blades first team, Haber was allowed to join their sister club Ferencváros on loan until the end of the year.
Haber had undergone a trial during United's 2006-2007 season in the Premier League, but ultimately failed to secure a permanent position with the team. In August 2009, after being unable to break into the Blades' starting lineup, Haber was allowed to join their sister club Ferencváros on a temporary contract until the end of the year.