Anthony Martial is the best young player since Lionel Messi, says Jamie Redknapp

The French international moved to United from Monaco on transfer deadline day in September for a deal worth a potential £58million and has started life in England with a bang, scoring four goals in five matches for Louis van Gaal's table-toppers.

With United travelling to rivals Arsenal on Sunday, the Sky Sports pundit Redknapp believes he is the best teenager in the game since Barcelona's super star Messi.

"I watched Anthony Martial for 90 minutes in the Champions League and the only 19-year-old I've seen better at that age was Lionel Messi.

"I played against Wayne Rooney when he made his debut but this boy has so much intelligence. He knows when to pass, when to cross it, when to dribble and when to shoot. He goes past people like they're not there."

Martial made a dream debut against Liverpool, scoring 20 minutes after coming off the bench, and he has been flying ever since.

"Everything he does, there is a reason behind it," said the former Liverpool captain.

"It's like he's been here before - certain players have this, you can't put your finger on what it is, but it's just a quality. I love watching him play. He's going to be a superstar."