Manchester United legend Sir Bobby Charlton is impressed by their current firepower.

United boss Sir Alex Ferguson is backing his strikers to hit 100 goals this season.

Asked if the four-strong strike force of Robin van Persie, Wayne Rooney, Javier Hernandez and Danny Welbeck compare favourably with the legendary quartet of Andy Cole, Ole Gunnar Solksjaer, Teddy Sheringham and Dwight Yorke, Sir Bobby told the Manchester Evening News: "I think they do.

"And with Van Persie, who has only been here 10 minutes, we at United have an excellent player.

"I am not talking about City or whether they spur us on. But what I will say it is a throwback to the old days.

"Like then, we are now the capital of world football. No-one would argue with that at the moment with City and United first and second in the league and United doing so well in Europe where they are unbeaten."