The Red Devils were down 2-1 at half-time of the Europa League semi-final first leg.
But it was a different story in the second-half as United ran away 6-2 winners.
"The result is positive but it's not finished," Pogba said. There is one more leg to go through. We're going to have to stay focused and play with the same mentality."
"In the first half we made two mistakes and conceded two goals. We were a bit all over the place after the second goal.
"At half-time we said let's do the right things, let's do simple things. The manager spoke. We were all motivated to score as many goals as possible."