Dan Carter has warned England about the qualities of Fiji wing Nemani Nadolo ahead of Friday's World Cup opener between the two sides at Twickenham.

Starting the match as the underdogs, Nadolo looks set to be Fiji's biggest weapon as they look to shock the hosts in Pool A, and Carter, who has played alongside the 20-year-old for the Crusaders in the last two seasons, is expecting him to make an impact on the tournament.

"Nadolo is bit of a freak. He's a huge man, but is also very skilful. He's a quality player and one to watch," the New Zealand fly-half told reporters.

"He's a proud Fijian and will be a real threat at this World Cup, not just against England, but against all the teams who Fiji face.

"Fiji could potentially cause an upset because they're a strong side."

Nadolo, who has won 20 caps for Fiji, was Super Rugby's top try scorer in 2014.