United’s build-up to the new campaign has been dominated by Mourinho’s clear frustration over transfers, which has brought his relationship with executive vice-chairman Ed Woodward into the spotlight.
The only arrivals at Old Trafford this summer have been Brazil midfielder Fred, teenage full-back Diogo Dalot and back-up goalkeeper Lee Grant.
In sharp contrast, Champions League finalists Liverpool have spent more than £170m on new signings including Brazil’s World Cup goalkeeper Alisson and midfielders Fabinho and Naby Keita.
“My CEO knows what I want and I still have a few days to wait and see what happens,” the Portuguese manager told MUTV ahead of his side’s pre-season friendly defeat by Bayern Munich on Sunday.
“The other clubs who compete with us are really strong and already have fantastic teams. Or they are investing massively like Liverpool, who are buying everything and everybody.
“If we don’t make our team better it will be a difficult season for us.”
United were beaten 1-0 by Bayern at the Allianz Arena, five days before their Premier League campaign begins at home to Leicester.