Manchester United’s new third-choice goalkeeper Lee Grant has dismissed the idea that manager Jose Mourinho is unhappy at the club after a lack of transfer activity this summer.

The 35-year-old, who surprisingly joined from Stoke City to act as back-up to the likes of David De Gea and Joel Pereira, is one of Mourinho’s three summer signings, with Fred and Diogo Dalot also joining.

However, Mourinho wanted five new faces through the door and has already publicly declared his frustration at that not yet happening, with the transfer deadline at 5pm on 9th August.

Manchester United vs Liverpool preseason Show all 10 1 /10 Manchester United vs Liverpool preseason Manchester United vs Liverpool preseason Manchester United vs Liverpool Soccer Football - International Champions Cup - Manchester United v Liverpool - Michigan Stadium, Ann Arbor, USA - July 28, 2018 Manchester United manager Jose Mourinho before the match REUTERS/Rebecca Cook REBECCA COOK REUTERS Manchester United vs Liverpool preseason Manchester United vs Liverpool Liverpool midfielder Xherdan Shaqiri (23) celebrates his goal with teammates during the second half of an International Champions Cup tournament soccer match against Manchester United, Saturday, July 28, 2018, in Ann Arbor, Mich. (AP Photo/Carlos Osorio) Carlos Osorio AP Manchester United vs Liverpool preseason Manchester United vs Liverpool Manchester United midfielder Alexis Sanchez controls the ball during the second half of an International Champions Cup tournament soccer match against Liverpool, Saturday, July 28, 2018, in Ann Arbor, Mich. (AP Photo/Carlos Osorio) Carlos Osorio AP Manchester United vs Liverpool preseason Manchester United vs Liverpool Manchester United midfielder Andreas Pereira scores a goal on a free kick during the first half of an International Champions Cup tournament soccer match against Liverpool, Saturday, July 28, 2018, in Ann Arbor, Mich. (AP Photo/Carlos Osorio) Carlos Osorio AP Manchester United vs Liverpool preseason Manchester United vs Liverpool Liverpool midfielder Mohamed Salah (11) controls the ball in front of Manchester United Axel Tuanzebe during the first half of an International Champions Cup tournament soccer match, Saturday, July 28, 2018, in Ann Arbor, Mich. (AP Photo/Carlos Osorio) Carlos Osorio AP Manchester United vs Liverpool preseason Manchester United vs Liverpool Manchester United manager Jose Mourinho, left, has an exchange on the touchline with Liverpool manager Jurgen Klopp, right, during the first half of an International Champions Cup tournament soccer match at Michigan Stadium, Saturday, July 28, 2018, in Ann Arbor, Mich. (AP Photo/Tony Ding) Tony Ding AP Manchester United vs Liverpool preseason Manchester United vs Liverpool Jul 28, 2018; Ann Arbor, MI, USA; Liverpool player Xherdan Shaqiri celebrates scoring against Manchester United during an International Champions Cup soccer match at Michigan Stadium. Mandatory Credit: Cameron Pollack/Detroit Free Press via USA TODAY Sports Cameron Pollack USA TODAY Sports Manchester United vs Liverpool preseason Manchester United vs Liverpool Jul 28, 2018; Ann Arbor, MI, USA; Liverpool player Mohamed Salah signs jerseys after an International Champions Cup soccer match against Manchester United at Michigan Stadium. Mandatory Credit: Cameron Pollack/Detroit Free Press via USA TODAY Sports Cameron Pollack USA TODAY Sports Manchester United vs Liverpool preseason Manchester United vs Liverpool ANN ARBOR, MI - JULY 28: Andreas Pereira #15 of Manchester United fights James Milner #7 of Liverpool for the ball during first half of the International Champions Cup 2018 at Michigan Stadium on July 28, 2018 in Ann Arbor, Michigan. (Photo by Jason Miller/Getty Images) Jason Miller Getty Images Manchester United vs Liverpool preseason Manchester United vs Liverpool ANN ARBOR, MI - JULY 28: Lee Grant #13 of Manchester United passes down field against the Liverpool during first half of the International Champions Cup 2018 at Michigan Stadium on July 28, 2018 in Ann Arbor, Michigan. (Photo by Jason Miller/Getty Images) Jason Miller Getty Images

But despite the public perception of the manager during preseason, Grant has insisted Mourinho is upbeat and enthusiastic working behind the scenes.

"From what we're getting from the inside it [the atmosphere around the camp] has been nothing but positive," the United goalkeeper told Sky Sports News.

(Getty Images)

"He's come in even after the Liverpool game and spoken very highly of what we have given as a team and as a unit.

"The messages we are getting from the manager are positive ones and that is important for us going forward. His attitude and demeanour around the place is great and that is helpful for us especially when we are under-manned and we are working our hardest.