The Juventus star claims his former club left him out because they thought he wanted to leave and was angered at being asked to train alone and work in the gym
Pogba's stint at Old Trafford was never short on controversy, with the Premier League giants forced into a legal battle regarding his signing from Le Havre back in 2009.
The Frenchman only made his first Premier League appearance for the club in January 2012 but left for Juventus soon after having failed to agree a new contract at Old Trafford.
United later claimed that Pogba wanted to move and the now 21-year-old believes the Premier League side showed him a lack of respect. "They left me out because they said I wanted to leave. That is disrespect," he told the BBC.
"Maybe they didn't think if they were making a mistake."
Ferguson had claimed Pogba failed to respect United at the time, but the Juve man said he was forced to train away from the playing group as his contract expired.
"Manchester United is a big club but you have to think about yourself," Pogba added.
"You have to play. The coach told me there would be space to play, but I wasn't playing.
"I was training alone for one week. They told me to go in the gym. I said, 'I am not an athlete, I am a footballer.'"