I believe Pobga has every respect for United, and no words from his agent or brother will change that fact - at least not until he publically condemns the club in his own words anyway, which he is yet to do.
I think you've been misinformed regards his feelings towards Madrid, mate. When it became public knowledge that Pogba was planning to join us from Juve, Real tried to intervene and hijack the deal with a counter offer. But he turned them down and joined us anyway, dispelling any notion that he wants Real above all else. His feelings may have changed in recent years, I don't know, but I do know he's one of Europe's best midfielders on his day.
You only need to watch the game the other night for evidence of that. We watched Fred bumble about the pitch like a headless chicken pretending he knows how to press, misplacing passes and generally looking like the worst player on the park - for both sides. Then Pogba replaced him with 20 minutes to go and showed us not only what a proper footballer looks like but what we'll be missing should he leave this summer.
Also, I honestly believe that if he re-signs for us, the whole Pogba Drama show will end for good. It will be the last contract of his career, removing any thoughts of playing elsewhere and keeping his gobshite agent quiet in the process.