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Manchester United have raised their offer for Southampton's Luke Shaw to a staggering £34million,

The increased package means the England left-back is on course to beat United's Wayne Rooney as the most expensive teenager in world football.

Shaw, 18, is set to make his first competitive start in tonight's clash against Costa Rica in Belo Horizonte - making him the second youngest player to appear for England at a World Cup finals behind Michael Owen

Southampton, who rejected a £27million bid from United last month, refused to comment last night on the Red Devils' fresh move for their star defender.

But the south coast club - under no pressure to sell - have long been adamant that they will not cave in for less than their valuation.

Southampton have already shown they can play hardball over their top stars, forcing Arsenal to splash out £15million for Alex Oxlade-Chamberlain three years ago.

Liverpool have been told they too will have to pay a monster £30million, a figure they have balked at, if they want England midfielder Adam Lallana.

(Image: Richard Heathcote)

New United boss Louis van Gaal is determined to land the Shaw, however, and wants executive vice-chairman Ed Woodward to complete a deal as soon as the player returns from Brazil.

The fallen champions are already prepared to offer the player, who has made just 60 league appearances for the Saints, a wage of around £100,000-a-week.

Although United have retained French left-back Patrice Evra for another season, Dutch understudy Alexander Buttner has already been allowed to leave for Dinamo Moscow.

Shaw will line up alongside United players Rooney, Chris Smalling and Phil Jones on Tuesday evening as England bid to avoid returning home without a point from a miserable tournament.

Hodgson also named Ross Barkley and Jack Wilshere and challenged the midfield pair to seize their chance.

The England boss rarely goes public with his team the day before a game but has decided on an experimental line-up with eight changes.

Hodgson has particularly high hopes for the duo and believes they can lay down a marker for the future.

“I’m looking for them to show their talent,” said Hodgson. “Both of them are very good passers of the ball, very good at running with the ball.

“Both, for young players, have good vision for the game. That will improve the more games they play, but they’re well advanced for their age. This is a chance for them to show they are good players.

“They have an opportunity to play from the start, and together in a game with other young players around them... they can show the faith and hope we have that those boys are ready to make their mark.

"This could be the first moment they give us an inkling that we are on the right track.”

Hodgson says it will be a 4-3-3 formation with Frank Lampard captaining the England team while Steven Gerrard is rested.

Hodgson added: “Frank will play a bit deeper and those will be a bit more advanced. That suits their play a bit better.”