"We were playing against their best team, it was their complete squad apart from (Corentin) Tolisso".
There is a quiet understanding that United need to fill their boots in the summer transfer window after being humbled by Manchester City past year, so signings like Boateng could be key.
Speaking after United's 1-0 defeat to Bayern Munich on Sunday, Mourinho said: "My CEO knows what I want and I still have a few days to wait and see what happens".
At the top of the wish-list is another centre-back, with Leicester and England defender Harry Maguire featuring prominently.
A new attacker is on the agenda as Anthony Martial has gone public with his desire to leave Old Trafford this summer having fallen out of favour under Mourinho during the second half of last season and Willian has been strongly touted as a potential replacement.
And journalist Christian Falk, who works for German newspaper Bild, claims United contacted Bayern over a deal for Boateng on Sunday.
Kudlow: Squeeze won't ease; China preps more tariffs
The deficit had narrowed in previous months as companies rushed out exports to beat the imposition of tariffs. A few minutes later, he tweeted again, writing, " Tariffs will make our country much richer than it is today.
Mourinho has been a grumpy man during pre-season - the club's lack of transfer activity the source of his frustration as rivals Liverpool splash the cash.
"He is more than capable - one of the best coaches in the world - but have they got it right?"
Chelsea are interested and could offer Willian, 29, as bait - a deal that would appeal to Mourinho even if it meant Martial signing for another Premier League club. (It was a) fantastic experience for the boys. And, at the same time, [Robert] Lewandowski on Axel, [Arjen] Robben on Mitchell, [Leon] Goretzka on Garner and Sulle on Chong.
"It was fantastic, absolutely fantastic".
Rashford wore the number 10 short, previously the Old Trafford property of the likes of Wayne Rooney and Zlatan Ibrahimovic.
Former Manchester United chief executive Peter Kenyon has urged Jose Mourinho and Ed Woodward to come together and work out their issues for the good of the club. "It's something fantastic for the kid, let's give the shirt to him".