Pogba rejoined Manchester United for a then-world record £90m back in 2016 and is two years into the lucrative five-year contract he signed.
"It beggars belief. It can only be a couple of things, either [chief executive] Ed Woodward is so inept at this part of the job [getting transfers over the line] where David Gill, the former chief executive was pretty good and had a good relationship with [Sir Alex] Ferguson, or Ed Woodward and the United board are absolutely trying to make Mourinho's life as miserable as possible in the hope they can work out some sort of deal where he goes sooner rather than later".
While United and other Premier League teams in England will not be able to bring in players after August 9, they can still sell players to other teams around Europe until August 31.
'He worked amazingly well Monday, Tuesday, Wednesday. "I like to work with my players".
Paul Pogba, Ashley Young, Fellaini and Jesse Lingard may yet be involved against Leicester tonight.
Speaking at Carrington, Mourinho said: "If they feel they can help us, 20 minutes, ten minutes half an hour..." But Liverpool did its business early in splashing more than 170 million pounds (US$220 million) on Brazil goalkeeper Alisson Becker and midfielders Fabinho, Naby Keita and Xherdan Shaqiri.
Mourinho warned last weekend that a "difficult season" could lie ahead if they failed to strengthen the squad before the deadline, but an inflated market has made the challenge of improving defensively an even tougher ask.
Another player who has come through an uncertain summer with United is Anthony Martial, who was left out of his France's World Cup squad, prompting comments from his agent that he wished to leave Old Trafford to safeguard his worldwide future.
And according to The Times, Mourinho is fuming with Raiola's actions.
Three early points and a ideal start to the season. "He didn't have nine days of preseason where no training, no football, absolutely nothing".
Internally, the greatest frustration for Mourinho has been waiting for the return of those players who had the longest World Cup campaigns.
The move was created to ease disruption in the first few weeks of the campaign after a number of high-profile players, including Alexis Sanchez, Philippe Coutinho and Virgil van Dijk, missed matches at the start of last season due to transfer speculation. "There is not a story".
However, Eurosport understand from reliable sources close to the club that Pogba has not made any financial demands to the club.
Now it looks like no new arrivals will be heading to Old Trafford in this window.unless Mourinho has something up his sleeve.
"But again, the perception of the people that reads can be different, but I like my players and my group. I won eight championships and three Premier Leagues but I keep feeling the second [place] last season was one of my biggest achievements in the game".
"I know the words you want me to say or not to say but words don't come easy. You will see which teams are candidates".