Sir Alex Ferguson hails Robin van Persie's impact at Man Utd

Robin van Persie is the "last piece of the jigsaw" for leaders Manchester United, Sir Alex Ferguson has claimed.

The striker's 12 goals in 18 games have helped the 29-year-old's new club to a four-point Premier League lead.

"I am reluctant to subscribe to the cult of an individual. But sometimes you find the last piece of the jigsaw," the United manager said.

United lost last season's title on goal difference but are currently the top scoring team thanks to the Dutchman.

The reigning Professional Footballers' Association Player of the Year and Football Writers' Association Footballer of the Year has made a huge impact at Old Trafford since he joined in the summer from Arsenal for £24m, scoring 15 goals in all competitions.

Van Persie's timing in the league has also proved crucial as he has scored the opening United goal in five games and the winning goal in five games, with the highlight being the crucial 3-2 victory away to rivals Manchester City.