Paul Pogba has said he was "disrespectful" by arriving late for training at Juventus twice last week, and vowed not to repeat his mistake.
Pogba, 19, was dropped from the squad to face Pescara as a punishment, and his agent Mino Raiola claimed that showed Juve coach Antonio Conte was "unable to deal with situations at this level".
But in an exclusive interview with TuttoSport, France Under-21 international Pogba took a very different tone.
He told the Turin-based sports daily: "What happened with these two delays? I was wrong, and I'm very sorry.
"Of course I apologise because I know I have disrespected Conte and my team-mates. It was not my intention to do so, and my delays are related to issues that are very trivial - they are mistakes."
"I know that mistakes must also be used to grow, and every experience is useful for the growth of each of us. I realise my mistake and I will do everything to ensure that is not repeated in the future. Case closed? I think so. I'm not going to reopen it with more lateness."
Pogba went on to discuss his reasons for choosing Juventus over Manchester United and offered a glimpse of what United manager Sir Alex Ferguson is like away from the spotlight.
"This is a great club, and there are not many differences compared to United - they are two of the most important clubs in the world," he said. "The difference here is that I feel appreciated, the players believe in me, the coach believes in me and I have the opportunity to play.
"Conte convinced me and told me that he wanted me, now he is showing me that he was telling the truth.
"Is Ferguson tough? No, he's relaxed and he's a guy who likes to laugh. Certainly you see him on TV all serious, but he knows how to be in the locker room."