Manchester United suffered a surprise loss to Frank Lampard's Championship side in the third round of the League Cup.
Mourinho refused to divulge -details of his confrontation with Pogba in training, but said a lot worse happened when the cameras were not there.
Rumours suggest there's a near total breakdown in their relationship and it seems more than likely one, or both, men will leave Old Trafford in the not so distant future.
"I don't see enough players working hard to say to the manager "this is my place in the team".
'Other managers in different clubs can be there for four or five years, not winning anything, and people like them and are happy with what they deliver to the club'.
"Nobody trained better than Paul on Tuesday, Wednesday, Thursday and Friday", Mourinho said.
"The team needs good players, players with personality".
Jose Mourinho gives Man United fans insight into Paul Pogba relationship
"I think for you was unbelievable because you made a story, an incredible story, out of 15 minutes of open training session", he said.
When play restarted, Rashford cleverly converted from Luke Shaw's corner but Noble picked out the yawning gap between Chris Smalling and McTominay in the United defence and Arnautovic coolly finished the job 16 minutes from time. It was not the case but loud critiques, loud instruction happens every day.
"Coaching is about that, but you make stories out of it, so I'm happy that the rules are only 15 minutes [of open training] once a month, and with situations like that it is not going to change".
"The decision was made, I informed the player and the players and when I was asked before the match on Tuesday I confirmed it and now I confirm (it again) and now it is the end of the story".
Marko Arnautovic sealed the points after Marcus Rashford briefly gave the visitors hope, meaning more uncomfortable questions await Mourinho, who omitted Alexis Sanchez, Jesse Lingard and captain Antonio Valencia from his matchday squad.
The former Chelsea boss stopped short of revealing what he'd said to Pogba, adding, "No. I don't think it is just him", Ferdinand told BT Sports.
The result caps a hard seven days for the Red Devils who drew at home to Wolverhampton Wanderers last Saturday and were dumped out of the EFL Cup in midweek.
How long will the relationship between the two stay on decent terms or is Mourinho just lying?