But United are even more shorthanded by the quick turnaround between the World Cup and the start of the new season.
Mourinho's transfer targets were not shared by the United board.
Boateng has been the subject of reports suggesting he could join Manchester United, while Paris Saint-Germain head coach Thomas Tuchel is also thought to be keen on signing the 29-year-old.
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.
It was a bright start from Jose Mourinho's side and they continued to control the game while Leicester also posed a thrat through Chillwell on the left and Maddison. But Mourinho now says he is focusing on the players already at his disposal.
"The players from previous year are responsible for the excitement, and then we brought in a few new players as an icing on the cake", Klopp said during the club's promising preseason tour in the United States.
"It was my first goal and that is all that was important, it doesn't matter how I scored", he said.
"If you compare with Europe, you are at a complete disadvantage and it does not help the clubs in the Premier League", Pochettino said on Spurs' tour of the United States.
Leicester City reportedly wanted close to £75m and, despite Mourinho's protests, the Man United chiefs elected to pass.
Jurgen Klopp's Reds demonstrated their ability to beat City on the big occasion last season, winning three of the four meetings between the sides, including a 5-1 aggregate win in the Champions League quarterfinals.
"We played well in periods against a good team that invest more than us".
"Pogba was a monster", Mourinho said.
What lies ahead for Jose and United?
A Shaw giveaway deep in his own area in the 75th minute nearly gifted Leicester the leveller, but De Gea made another spectacular save to stop Demarai Gray's first-time shot from a pinpoint Vardy cross.