Romelu Lukaku must improve his first touch at Manchester United, according to Ryan Giggs

The United legend believes the club's new £75m signing has several areas to work on ahead of the 2017/18 Premier League season

Romelu Lukaku in action during United's pre-season tour to the US (AFP/Getty Images)

Ryan Giggs has "no doubt" that new signing Romelu Lukaku will score goals for Manchester United but he believes there are still areas of the forward's game with room for improvement.

The United legend says the club's cross-town rivals Manchester City are the team to beat in the Premier League title race thanks to their array of "scary" attacking talents.

And while he says Lukaku can be a new attacking threat for United, he must work on his first touch and become more consistent if the Old Trafford club is to compete.

"Romelu Lukaku will score goals, there's no doubt about that," Giggs wrote in his column for Sky Sports.

"He's still got to work on his first touch but he has already been scoring plenty at West Brom and Everton and will get more chances at Old Trafford.

"What he won't have experienced is the pressure of being a Manchester United forward.

"He wouldn't have felt that before and you can't get away with the odd mediocre performance."

Lukaku has scored 85 Premier League goals in the last five seasons but has been accused of being a "flat-track bully", only scoring against the smaller teams.

Whether or not that criticism is fair, Giggs says the rest of Lukaku's new United teammates cannot rely on the Belgian forward to get them out of trouble.

"There were too many home games last season where we didn't take our chances but it's not just down to Lukaku," Giggs added.

"The rest of the team need to be contributing as well."