Manchester United's ambitious plans during the remainder of the summer transfer window and Louis van Gaal's intent to assess his squad during the pre-season tour means the current Old Trafford crop are under pressure to impress following the disappointment of the last campaign.

Among those are Wayne Rooney, who after a stop-start season endured an uncertain World Cup with England and enters the news season with uncertainty over his place in the United attack.

And therefore, the 28 year old is intent on proving his worth to Van Gaal during United's four pre-season games starting against LA Galaxy on 23 July.

"Of course, we all have to go out there and show what we can do and show every day in training what different qualities we have as players and a team. Everyone wants to impress a new manager and that's what we're aiming to do," Rooney told MUTV.

"Any player will tell you the most important thing for the season is to get a good pre-season under your belt and that's what we're all trying to do.

"We've got a new manager with different ideas - we have to train well and listen to what he wants us to do and take that onto the pitch and show him what we can do.

"It's been good meeting the manager and the new coaching staff. The first couple of training sessions have been good and everyone is looking forward to getting the games underway."

United executive vice-chairman Ed Woodward says the club's business in the summer transfer window is far from finished and that further additions are imminent, news which comes as they continue to be linked with Paris Saint Germain forward Edinson Cavani.

Van Gaal though, who has already sanctioned moves for Ander Herrera and Luke Shaw earlier in the window, wants to look at this squad before tinkering with personnel.

"I want to look at the players here at the present," the United boss said.

"I know the players but I have not trained and coached them. It will take three or four weeks to see what they can do before we buy other players.

"Shaw and Herrera were already on the list and I approved them because I liked them."