Manchester United manager Louis van Gaal does not rate Luke Shaw, according to former Old Trafford coach Rene Meulensteen.

Left-back Shaw became the world's most expensive teenager when he was signed from Southampton for £31mmillion this summer but has not yet appeared for United.

Asked if he believes that Van Gaal does not rate 19-year-old Shaw, Meulensteen told talkSPORT: 'Yes. It’s a big surprise for me.

VIDEO : Scroll down to hear Meulensteen reveals he does not think Van Gaal rates Shaw

Luke Shaw (third right) looks disappointed on the Manchester United bench as his team lose 5-3 to Leicester

Shaw is yet to make a first-team appearance for United since his £31m summer move

Shaw (centre) has been injured, but was pictured warming down after United's loss to Leicester on Sunday

'He would have been informed by the club that they were putting this bid in for Shaw because he’s an up-and-coming player.

'He’s got a good left foot and a lot of pace. He’s got a lot to learn to get to a Man United level though.

'He’s a great prospect but he’s brought [Marcos] Rojo in, which is bad news for Shaw.'

Meulensteen's comments come just days after United defender Jonny Evans claimed that Shaw will be the best left back in the world.

'I had the chance to work with Luke in pre-season and there is no doubt he is going to be the best left back in the world,' Northern Irishman Evans told United Review.

Louis van Gaal, bottom centre, has not chosen Shaw to represent his United side yet

Shaw joined United on in June from Southampton, the club who awarded him his first professional contract.

His form last season earned him a place in England's World Cup squad at the expense of Ashley Cole. He played in the draw against Costa Rica.

Shaw's non-appearance for United may be down to the fact that Van Gaal has questioned his fitness since he came back in the summer.

Shaw has played for the United U21 side and is pictured in action against Sunderland