Tough times ahead if Manchester United fail to improve squad, warns Mourinho
The transfer window in England closes on Aug. 9, a day before United begin their Premier League campaign against Leicester City.
United have been relatively quiet in the transfer market, adding Brazil midfielder Fred, 19-year-old Portuguese defender Diogo Dalot and goalkeeper Lee Grant.
"If we don't make our team better, it'll be a difficult season for us," Mourinho told MUTV after United's 1-0 defeat to 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.
"My CEO knows what I want and I still have a few days to wait and see what happens."
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