The former Manchester United manager feels something happened at the break which triggered the performance from the away side in the second period.
"You could see the potential and wow he is fulfilling that now and he is different".
"I think the only thing Paul Scholes does is criticise".
"Obviously Paul is a confident lad, so over time he's going to be a great player for this club and have a big season this season".
Turning specifically to Scholes' criticism of Pogba, Mourinho added: "I think the only thing Paul Scholes does is criticise".
"Our pride, our effort, everything was top class and on top of it we played very well", he said.
Scholes offered a tough assessment of Pogba's contribution to the Man United team, saying that he has to impose himself more on games given his stature. "It's just the way football is". 'If one day Paul decides to be a manager, I wish he can be 25 per cent as successful as myself, ' he said. So if he's 25%, he'll be quite happy.
United have been linked with a number of players in the transfer window, but Mourinho remained non-committal in terms of additions in January. "He doesn't make comments, he only criticises".
This was prompted by Pogba's performance in United's 2-0 demolition of Everton at Goodison Park where he was named Man of the Match.
In BT Sport's coverage of United's 0-0 draw with Southampton, Martin Keown ludicrously suggested the manager had lost the dressing room, while Paul Scholes, on the same panel, suggested Paul Pogba had "strolled" through the game.
The League Cup and Europa League triumphs apart from ending the calendar year in third place made 2017 a year of vast improvements for Jose Mourinho and Manchester United. "For both of them to play together we really need them to be at their best level". That would allow Mourinho to blame Manchester United for his departure. "But he wanted to play, we had to stop him to play because he was saying, 'I feel incredible, I should go and play.' But to follow the protocol and to protect the player, we decided he wouldn't play". It would just be a better use of his and everyone else's time if he allowed the football do the talking rather than entering into pointless spats, regardless of whether he's right or wrong.