The Frenchman left the Bianconeri to return to Old Trafford in 2016, but he’s had a difficult relationship with the Special One.
“It wasn’t easy for Pogba to get used to English football,” Capello told La Stampa.
“Manchester United can count on the structure of their team, the experience and the quality of their champions.
“United deserve the utmost respect and remain an opponent to be feared, but at Old Trafford Juventus impressed with their personality and conviction.
“Are they favourites to win the competition? It’s early. What we can say is that Juventus have shown they’ve got a Champions League mentality, tackling the big European commitments with conviction and relaxation.”