Manchester United host Leicester City on Friday night in the Premier League's curtain raising clash of the 2018/19 clash. United said they were happy to be kept informed.
Brazil worldwide Fred, highly-rated but raw full-back Diogo Dalot and third-choice goalkeeper Lee Grant all arrived at United by early July, but nobody followed despite Mourinho's explicit desire to bring in two more players.
Manchester United and Leicester City have not too long a history in the Premier League. There was no offer made for Toby Alderweireld at Tottenham. Signing Alexis Sanchez when he became available was another.
"They do not normally leave themselves in this position".
Speaking at Carrington, Mourinho said: "If they feel they can help us, 20 minutes, ten minutes half an hour..."
Boateng trained with Bayern Munich on Thursday, with Paris Saint-Germain now touted as the front-runners for his signature - a deal that can, of course, be done later in the month after the Premier League bows out of the market as a buying power.
The Frenchman - who played at Old Trafford for five years - posted a video on Instagram in which he said: "This weekend the Premier League starts and we play our first game".
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Signing a centre half is still the priority and the club are favourites to sign Yerry Mina from Barcelona for around £27 million. The Merseysiders are understood to have been keen on Mina since his stellar displays for Colombia at the World Cup.
"I see him very well but we need words with that small group to see if they can give us a hand".
While the United hierarchy is known to be reluctant to sell the young striker, Mourinho has endured a trying time in his relationship with Martial after he left United's American pre-season tour to attend the birth of his child and did not return - missing nine days of training.
The Portuguese went some way to countering suggestions he is unhappy with his squad at his pre-match press conference.
"I have my players and I like my players", he declared.
"One lie repeated 1,000 times is still a lie, but the perception of people is that it's true". Along with the new signings, nearly 9 players have left the club with key player Riyadh Mahrez joining reigning champions Manchester City, Robert Huth being released and record signing Ahmed Musa leaving for Al-Nassr to name a few.
"My view is that first of all is hard for me to believe we finished second when I listen, when I read, not much but sometimes I do, it is hard to believe that we finished second because you [the media] are capable of making people that finish second look like they were relegated, and people who win nothing, finish below us, and you make them look like serial winners", Mourinho said.