31st of december isn't over two months ago, unless you're rocking a completely different calendar. Not sure why you're harping on about the Liverpool match, he only started struggling when Liverpool crowded him with 3 players down that side, and Pogba offered the grand sum of feck all in terms in terms of helping out. In terms of their defence and comparing with other teams results, Liverpool just managed a 1-1 draw against Chelsea, i'm sure you remember how we played against Chelsea. Comparisons and all that.
It's a bit too easy to shift focus over to training, considering none on here (or very few, and they keep their mouth shut about it) knows about the training sessions. In terms of "tearing it up" in training, isn't general training sessions about keeping fitness, it's not like they are 12 years old playing 11 vs 11 to decide the starting lineup.