The France international moved to Manchester United in a £89m move from Serie A giants Juventus in the 2016 summer transfer window.
The Red Devils star struggled to maintain his consistency in the 2016-17 season despite Pogba helping Manchester United to win the Europa League and the League Cup.
The 24-year-old scored two goals and made two assists in their opening four Premier League games before the versatile suffered a serious hamstring problem.
Pogba has struggled to impress since his return to the side and Mourinho criticised his big-name signing for his lack of discipline in the middle of the park.
Former Chelsea FC star Lampard described Pogba as a “YouTube player” ahead of Manchester United’s clash against the Blues in the FA Cup final at Wembley on Saturday.
“I don’t know what Pogba is. He makes bad decisions but then does fantastic things which must wreck Jose’s head,” Lampard told the Evening Standard.
“Mourinho tried to embarrass him out of it and I worry Pogba did not get it.
“Pogba is naturally more talented than I was, he would run all over me and has better feet, but there’s no point dribbling in your own half.
“All that ‘flick and roll of the studs’, I’m not an advocate of that. A lot of young players see it on YouTube and think it’s amazing but I don’t like it.
“He has delved to that side too much. His numbers are not good enough, he progressed at Juve but there’s another progression he has to do.”
Manchester United haven’t won the Premier League title since 2013 when Sir Alex Ferguson was still in charge of the Red Devils.
Pogba was part of the Red Devils team that beat Southampton in the League Cup final and Ajax in the Europa League showpiece last term.
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