The world-record £89 million signing struggled as Jose Mourinho’s side slipped to a 2-1 defeat at Old Trafford.

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Speaking on Sky's Monday Night Football, Carragher admitted he felt sorry for the Frenchman’s midfield partner Marouane Fellaini.

"For a central midfielder in a game of that magnitude, it was one of the most ill-disciplined performances you will see in the first 40 minutes," the former Liverpool defender said.

"The only way to describe it was like a kid in the school ground. The best player in the school. Does what he wants, runs where he wants."

Paul Pogba shoots against Manchester City Image credit: Reuters

However, fellow pundit Phil Neville claimed Mourinho should change United’s system to a 4-3-3 and allow Pogba more freedom.

"He’s not someone you would play in a midfield two. You don’t want him to be disciplined," said Neville.

United have deployed a 4-2-3-1 at the start of 2016-17, with Wayne Rooney tucked behind Zlatan Ibrahimovic in attack.

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