To find another Chelsea squad with just 16 Premier League starters ahead of a new season, you have to go back to the summer of 2004.
Interestingly enough, though the Swede isn't expected to make a comeback before the end of this year, Mourinho has expressed his wishes to keep him while confirming the possibility of an extended stay.
Stopping short of a guarantee, Mourinho believes an encouraging pre-season and success in the Europa League last season can propel his side to further success.
Following the Red Devils" 2-1 loss at the hands of Los Blancos in the Uefa Super Cup meeting earlier in the week, the "special one' all-but ruled out a move for the latter and has hinted that he's ready to place full faith in his existing players.
Matic sale to Man Utd could cost Chelsea the league
With plenty of time until deadline day, The Grapevine has the very latest football transfer news from the Premier League's top clubs in our round-up below.
Jose Mourinho has been unable to get a deal for Inter Milan winger Ivan Perisic despite reports the Croatia global wants to move to Old Trafford.
Chelsea won the title with relative comfort last season in a dream first campaign at the helm for manager Antonio Conte.
With Sergio Aguero and Brazilian Gabriel Jesus the options for central striker and the likes of David Silva, Kevin De Bruyne, Raheem Sterling, Leroy Sane and new arrival Bernardo Silva to choose from as attacking midfielders, City have little choice but to attack.
"But we have lost important players to injury too, such as Marcos Rojo, Ashley Young, Luke Shaw, and Zlatan Ibrahimovic".
"We have had a better pre-season than a year ago and we have the confidence levels of a team that has won a European competition and returned to the Champions League".
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"We have many options for Venezuela , including a possible military option, if necessary", Trump told reporters at his New Jersey golf club on Friday.
"We have the confidence levels of a team who won a European competition. I have better conditions to deliver a better season than my first one". "I don't think I am in a position of moaning, crying, contesting or to say I am not happy with it", the Portugese continued.
Mourinho has indicated that he wants a fourth signing before the transfer window shuts on August 31, as he needs a winger to bolster his squad.
"You know, in my initial analysis coming from January and progressively through the other months, I was thinking about four players", the United boss said before facing the Hammers on Sunday.
"Everything is good and strong, but some of them (other clubs) are really strong in the market, so it is going to be hard.
I understand by doing 75 percent of what I asked, the club did very well".
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Arsenal have signed two players so far this summer after having tied up deals for striker Alexandre Lacazette and defender Sead Kolasinac.