United slumped to a 4-1 defeat by league rivals Liverpool in the pre-season International Champions Cup on Sunday and will be looking to avoid another dismal result when they take on Champions League holders Real Madrid on Wednesday.
The Belgium-born Brazilian has not started a competitive game for United since October 2015 and is still waiting to make his Premier League debut for the club.
"I think because his players, the majority of his senior players are not there", he said on Sky Sports News. It is our nature and our way to always want more for your team.
Asked about some of the names with whom United have been linked - including Leicester's England star Harry Maguire and Barcelona defender Yerry Mina - Mourinho replied: 'I would like to have two more players.
Mourinho is still without a number of players, who reached the latter stages in Russian Federation, and made clear his preference that they cut their breaks early to aid preparations for the season opener against Leicester on August 10. "OK, we lost against Liverpool, but pre-season is about getting our fitness, getting to know new players and making sure we're as well prepared as possible for when the season starts".
The Red Devils will line up Leicester against in the Premier League opener on the 10 August at Old Trafford.
In their stead, PSG were believed to have become the front-runners to sign the 22-year-old from Manchester United. And I read into that he wants the best for the fans and the best for us and of course the best for him. I think he was just voicing that frustration.
Manchester City, too, have suffered from a weakened squad for their summer friendly schedule, with 16 players enjoying post-World Cup breaks - but Pep Guardiola has been predictably more upbeat about the prospect of blooding youngsters in the club's friendly games. Mourinho said of Sanchez.