Younger brother Paul was described as an "irritable" player who "doesn't like to lose" by Florentin earlier in the week, but it is the emotions of their mother that has caught the attention of the United boss.
The former midfielder praised Paul's display but joked it was "almost like a testimonial", with the brothers walking off together at half-time chatting.
"I learned to lose and I would say that you're not losing but learning".
"We love sport and I have beaten him quite a bit at table tennis, but they're the only times I can think of that we've played against each other". I think it's a good, nice destiny. He can handle all of that because of the mental strength he has had since his youth.
Sedan's squad made it easy for Florentin to make his debut with the club mainly consisting of journeyman French footballers, aside from Benoit Costil.
"It's a good result because we wanted to win".
"We'll always be behind him".
"It was something magic playing against my brother", the world's most expensive player said. "It will be weird but that's football", he said. At one point I thought 'I don't know what's going on here, something must be going on!' I think I've hit the bar more in eight months here than I did in four years at Juventus.
United are at home in the first leg and will be hoping to progress against the side that finished sixth in Ligue 1 last season.
But it was another Hollywood summer signing who took the headlines, Zlatan Ibrahimovic, netting the first hat-trick of his short but decisively potent Old Trafford career. "But one day I will, hopefully", Florentin Pogba told The Guardian.
Florentin adds: "My parents will have mixed feelings because whatever happens there will be one victor and one loser".