Ignoring the penalty, and the Gapko goal, what I cannot forgive him is that he was shitting bricks as soon as Liverpool had one or two chances after our decent first ten-fifteen minutes, and immediately after Liverpool's chances he started panicking with the ball and was one of first player that you could see was nervous. And he is one expensive signing who played for fecking Ajax, Juventus, Bayern and now United and he is still error prone like he always was, he should be the one who calms the team down, and not the first one who goes to panic mode.
I was skeptical when we wanted him because I always thought he was decent but also very expensive for any club he played - hence one of the most overrated defenders in history, and he is looking exactly the same as I always thought he is.
He was European/Holland's Harry Maguire years before Harry existed, and never deserved the praise he got, because he always cost his team goals, and years after he hasn't improved much. As someone already said, I guess we got good squad player for top class CB money. It is what it is.