Pogba, 25, missed training at the Aon Training Complex on Friday but hopes to prove his fitness during Saturday's final session ahead of the clash.
Romelu Lukaku could return to the matchday squad.
Alexis Sanchez also trained with the group despite picking up a slight knock in Turin.
And Mourinho said United are not focusing on the yawning gap between the two clubs in the build-up to Sunday's game. If you want to speak about their football potential we can speak and football potential starts with investment, and after that of course there is a quality of the work, of the organisation - I think that is untouchable.
"But what is behind [it] I can not say". "I don't know his answer".
It was the 121st goal in the competition for five-time Champions League victor Ronaldo who Juventus are counting on to help them lift their first European title since 1996.
The champions are in ominous form leading into the encounter, having won six straight in all competitions and scored 12 goals in their past two outings.
Mourinho cupped his ear towards to Juventus fans, who had been insulting him for the majority of the match, after his side snatched a late victory. "And I think even if this game hadn't ended with victory I would have the same feeling that the team played really, really well from the first minute against a super team".
"We shouldn't have given away those freekicks.it was the only way United was going to score", Juve coach Massimiliano Allegri said. If my mathematics is right then we qualify [only if Valencia don't beat Juventus] so I think now I leave it to the Old Trafford people.
"We have to just think about the match, is hard enough as an isolated event, if you want to put that match into the context of where we are and where we can be".