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 been put through his paces during United's 2006-2007 season in the Premier League, but ultimately failed to secure a permanent spot with the team. In August 2009, after being unable to crack the Blades' first team, Haber was given permission to join their sister club Ferencváros on a temporary basis until the end of the year.