But while he confirmed Pogba will be back in the side for United at West Ham on Saturday, he also made it clear who's boss going forward.
West Ham had only won one of their previous 19 Premier League matches against United but an early strike from Felipe Anderson and a Victor Lindelof own goal shortly before half-time left the disjointed visitors with a mountain to climb.
They pulled a goal back immediately after that change, substitute Marcus Rashford flicking home at the near-post from a corner, but West Ham's two-goal advantage returned nearly immediately. The team needs good players, he is good.
One of Mourinho's methods to get back into the game was to throw Marouane Fellaini forward, and the Belgian almost reduced United's deficit with a powerful 65th-minute header which Lukasz Fabianski did well to claw off the line.
Mourinho is now in the midst of United's worst start to a Premier League season in 29 years and odds have been slashed on him losing his job.
Marko Arnautovic put the game away in the 74th minute, beating de Gea on a one-on-one.
With their first home win of the season and only their second victory over Manchester United in 20 league matches, West Ham move up to 12th place with seven points.
Nevertheless, Mourinho insisted: "I have no complaints with the players' attitude".
Heading into the match against West Ham, Pogba started in central midfield, but failed to influence proceedings as the Red Devils capitulated at the hands of Manuel Pellegrini's side.
"Look, for how many months people are asking for Martial and Alexis Sanchez is not playing well enough so this week it was time for me to agree so I picked Martial and left Alexis out". "What happened the other day happens many days; conversations with players I have many times ..." If, even when you make a decisive change the result is still the same, it suggests the problem is not with the personnel.
"[Scott] McTominay, Man United at that level?" This is a United team in a mess, led by a manager whose authority is disappearing, if not gone completely. West Ham takes on Brighton at 3 p.m. on Friday at Falmer Stadium in Brighton, England.
"Tomorrow he plays. He is a player like the others", said Mourinho. A manager has to give his creative players a platform to express themselves and the gap between United's front two and the midfield players was too big.