Only way is up as Duff moves to the Cottage
The fee with Newcastle for the 30-year-old has not been disclosed, but is believed to be in the region of £4 million (€4.6m) as the north-east club come to terms with the cost of relegation to the Coca-Cola Championship.
Having made his breakthrough under Cottagers boss Roy Hodgson when they were both at Blackburn, Republic of Ireland winger Duff believes Fulham have a squad capable of building on last season’s seventh-place finish which secured a crack at the new Europa League.