Manchester United boss Alex Ferguson has described the Newcastle job as the hardest in football.

Ferguson's Red Devils inflicted a 6-0 thrashing on the Magpies at Old Trafford on Saturday to leapfrog Arsenal at the top of the Premier League.

In contrast, Newcastle are 11th and still searching for a manager after Harry Redknapp turned down the chance to replace Sam Allardyce .

Ferguson feels the Newcastle hierarchy need to give whoever eventually replaces Allardyce a chance to turn the situation around.

Ferguson said: "I would say Newcastle are the most difficult club to manage in the game, gobbling up managers and spitting them out again with hardly a pause.

"If they regarded their managers as something more than ships that pass in the night they might achieve the stability and consistency that is the basis of success at any club."