Paul Pogba revealed he first left Manchester United after Sir Alex Ferguson opted not to play him during an injury crisis.The Frenchman was a highly-rated prospect after graduating from the Red Devils‘ academy, but ultimately left the club in 2012 after making just seven first-team appearances.Paul Pogba saw his first-team opportunities limited in his first stint at Manchester UnitedGettyPogba would later return to Old Trafford for a world-record fee in 2016 after starring during his four years away at Juventus.He was a far more influential figure during his second stint, making 233 appearances in all competitions, scoring 39 goals and assisting 51 times as well as winning the Europa League and League Cup.But Pogba has now admitted he only left United for the first time after feeling he would not be given a chance by manager Ferguson.‘That killed me’Speaking to the Rio Ferdinand Presents podcast, Pogba revealed the final straw in his initial United career came in a Premier League clash with Blackburn in 2011.The Red Devils headed into their clash with relegation-threatened Rovers navigating an injury crisis in midfield.Aged 18 at the time, Pogba was still yet to make his league debut, but had grown hopeful that he would soon be handed his opportunity.However, legendary boss Ferguson instead started Ji-Sung Park and the Brazilian Rafael and didn’t introduce Pogba off the bench, prompting him to reconsider his future.Opening up on the moment, he told former United teammate Rio Ferdinand: “I didn’t play until against Blackburn. That killed me.”“[Tom] Cleverley was injured. Scholesey wasn’t there. And he had no midfielders left. So I’m like: ‘I’m not going to start. It’s fine’. “And he put Park and Rafael in midfield. Sir Alex Ferguson’s Manchester United finished second in the 2011/12 campaignGettyHowever, Pogba made just three Premier League appearances that seasonGetty“And I remember I went to warm up in the first half. So I go first half, I go warm up. Second half – I warm up for like 17 minutes. “I didn’t come on. I was like: ‘Nah’.”With the match ending in a 3-2 defeat, Pogba revealed it was that afternoon when he decided he should seek a move elsewhere.The current Monaco star continued: “Clubs were already talking because I was going to finish my contract. “And this day, I was like: ‘Yeah, I might leave. If they don’t believe in me, that I can play in this team, maybe I’ll go somewhere else and it will work’.”This ultimately proved the right decision, as Pogba left Old Trafford for Juventus the following summer, where he went on to make a name for himself.Pogba opened up on when he was forced to reconsider his early Man United careerX formerly Twitter / @RioMeetsHe won four consecutive Serie A titles in Turin and emerged as one of the best young talents in European football.Pogba admits second United stint was regrettablePogba returned to Man United in 2016, joining for a then world-record £89m fee, with Jose Mourinho as manager at the time.His second spell with the Red Devils was widely labelled a failure, despite showing glimpses of his huge ability and enjoying some success with Europa League and EFL Cup glory.He never managed to unlock his full potential, with his big-money return expected to help restore United to their former glory.And Pogba has now admitted he too feels he could have achieved more, but also argued he was not surrounded by enough quality across the board throughout his six-year stint from 2016 until 2022.Reflecting on his first season back in Manchester, he said: “We had a great team, Zlatan [Ibrahimovic] came, [Henrikh] Mkhitaryan also – we had a really good team. Pogba won the World Cup with France during his second spell at United, but struggled to replicate these performances at club levelGetty Images - GettyBruno Fernandes is in contention to win this season’s PFA Player of the Year awardGetty“But in one team, you have 11 players, and I’m sure that I should have done more, but I don’t know if I could have done more.”Pressed on why he felt this way, Pogba pointed to current Man United star Bruno Fernandes, who he claimed would be in contention to win the Ballon d’Or if he played for another club.On why he underperformed at Old Trafford, the World Cup winner replied: “Because of everything, because of the team.“I mean, I’m not comparing, but can Bruno Fernandes do more than he does now at United?”Pogba continued: “Do you think Bruno, if he’s in the other team, he’s not in the top three – a Ballon d’Or player?“You put him in [Manchester] City, he’s in the Ballon d’Or [conversation].”