Manchester United stars leap into training as Jose Mourinho's side steo things up ahead of pre-season opener in Los Angeles

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Victor Lindelof, Marcus Rashford and Anthony Martial were in full flight on Wednesday as Manchester United continued their pre-season preparations in America.

Jose Mourinho's side are out in California for a tour of the United States with the start of the next Premier League season just under a month away.

And with an opener against Los Angeles Galaxy just four days away, the Europa League holders have been keen to up the ante on the training field.

Victor Lindelof and Marcus Rashford leap over hurdles during training on Wednesday

Rashford watches his striking partner Anthony Martial repeat the trick in training

New signing Romleu Lukaku continued to attune himself to his new surroundings

Jose Mourinho monitors his side's progress ahead of their return to action

First-team players were leaping over hurdles and testing their agility, not just their footwork as Mourinho ran the rule over his squad.

United face a grueling schedule in the States with five friendly matches lined up, including clashes with Manchester City, Real Madrid and Barcelona later this month.

They then head back to Europe for games against Valerenga in Norway and Sampdoria in Dublin.

United face Real again in the final of the Super Cup on August 8 before the beginning of the 2017-18 Premier League campaign at home to West Home five days later.

Marouane Fellaini jogs in the California heat as United continue their tour of America

Eric Bailly, Timothy Fosu-Mensah and Chris Smalling are all smiles as they stretch their legs

Lukaku starts off on a sprint as fellow new signing Lindelof waits behind him

Goalkeeper David de Gea gets down low to his right to make a save in training

Romelu Lukaku continued to attune himself to his new surroundings after joining up with his team-mates in Los Angeles following his £75m move from Everton.

Former striker Andy Cole is excited by the Belgian's arrival and believes he will provide a missing ingredient for the side next season.

'He's a massive signing,' Cole told MUTV. 'They're all big-money signings nowadays but he's proven in the Premier League. 

'He'll get goals and that's what Manchester United missed last season. I think he's got plenty of those in him.

'Since he left Chelsea earlier on in his career, the way he's gone about his business is by getting goals. 

'He did it at West Brom, then got quite a few more goals at Everton, and hopefully that trend will continue at Manchester United.'

Game of Thrones actor Conleth Hill poses alongside Victor Lindelof on Instagram

Another Game of Thrones star Iain Glen met Manchester United goalkeeper David de Gea

As United prepared for the clash with LA Galaxy they were treated to a visit to their training ground by acting royalty from Game of Thrones.

Conleth Hill, who plays Lord Varys, posed for a picture with Lindelof, while Iain Glen, who plays Jorah Mormont, was snapped alongside David de Gea.

Former United midfielder Bojan Djordjic managed to one-up the current stars, though, as he managed to grab a picture alongside The Rock. 

Former midfielder Bojan Djordjic met Holywood star The Rock out and about