Carragher wrote for the Daily Mail: "This isn't the time to make snap judgements; this isn't even the time for anyone to start panicking. But what is clear, after events this last week, is that Jose Mourinho has a riddle to solve with Paul Pogba.
"I described Pogba's performance in the Manchester derby on Monday Night Football as him being like a kid on the schoolyard. He ran all over the pitch, without thought or discipline, and was never in the one area he should be: central midfield.
"Mourinho had a change of plan for the game against Feyenoord in the Europa League on Thursday, using him in a 4-3-3 formation but, again, United were beaten and Pogba was subdued; he looked increasingly irritated with himself the longer the game progressed."