The Red Devils signed the France international in an £89m deal from Serie A giants Juventus in the 2016 summer transfer window.
Pogba won the Europa League and the League Cup in his first season back at Old Trafford but the powerful midfielder only scored five goals and made four assists in the current campaign.
The Manchester United record signing made a brilliant start to the 2017-18 term following two goals and two assists in their opening four Premier League games.
Pogba’s start was cut short following a hamstring problem which kept the former Juventus star sidelined for two months.
The 25-year-old scored twice in the second half at the Etihad Stadium to restore parity before Chris Smalling netted a dramatic winner in a 3-2 victory over Manchester City in Saturday’s derby.
Former Chelsea FC star Lampard believes Pogba needs to play with more responsibility in the Manchester United side.
“A lot has been spoken about him all season, for good and for bad,” Lampard told BBC Sport.
“The first half [at City] was negative of Pogba – he did not threaten the midfield or the backline and was passive.
“Sometimes he has a tendency to trot around – there are no drastic movements. He is sometimes over-elaborate in midfield – it invites pressure and puts his team in trouble.
“In the second we saw a different player. He can play with responsibility and get into goalscoring positions.
“If he does that more, he has all the attributes do it and score more regularly. He can be that top-class player he is threatening to be.”
Manchester United are in second place in the Premier League table and 13 points adrift of leaders Manchester City.
The Red Devils lost 2-1 to La Liga giants Sevilla in the Champions League round of 16.
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