That's a clear indication that Pogba's relationship with Mourinho has affected his happiness and the ability to turn in the kind of dominant display he gave against Leicester.
United added only Brazilian midfielder Fred, teenage full-back Diogo Dalot and third-choice goalkeeper Lee Grant to the squad that finished 19 points adrift of champions Manchester City last season.
Mourinho has previously spoken about how he likes to have two options per position and it's now finally that case so there's no excuses left for the former Southampton man.
Canada’s DFO crews spot orca, ailing but still alive off Vancouver Island
The orca, which was last seen Friday, is part of an endangered population that has dwindled to just 75 whales. The pod has been keeping to the outer coast and west end of the Strait of Juan de Fuca and environs.
"That (World Cup) is in the past, it is part of history".
"We don't really have one", Pogba said on Sky Sports.
"You have to keep it in mind, but you have to keep working to get better and better because I am still quite young".
The Portuguese manager was pointedly critical of his star player following the World Cup, essentially challenging him to replicate his World Cup form at the club level.
Boateng cools on United interest
Leicester have slapped an £80m price tag on the 25-year-old but United may be forced to overpay as they grow more desperate. The player said the accusations were a great disappointment but he admitted to intensifying his rehabilitation.
Mourinho, who has continously complained about the lack of new signings at Old Trafford, said Pogba "is happy, proud and ready to work" at Manchester United. For us it will be a hard season because I had my plans, and I had my plans for many months, and I started the Premier League season without a situation I thought.
He also put up a photo on Instagram with the caption - "I'll always give my best to the fans and my teammates no matter what's going on". I want to progress and get better again and I want to win more trophies.
Less than a month since Pogba scored in the World Cup final to help France lift the trophy, he was thrown straight into action by Mourinho despite just returning to pre-season training this week.
"I have the foundations to do that here with the manager and my team-mates at Manchester United".
Meteor shower of the year coming up
However, it's important to set an alarm clock, because the meteor shower occurs while most people are sleeping. If you happen to have trouble sleeping on Sunday night (August 12), that's a ideal time to step outside.
There was a fantastic atmosphere inside the ground because United were playing the kind of football their fans want to see and showing them something they had not seen for a long time, which was a bit of a spark.