Discussing the goal on Match of the Day, Shearer said: "This is the problem at Old Trafford. This epitomises everything that's wrong with this football club and this football team.
"Murphy and Pogba are together but have a look at them in a couple of seconds. [Cardiff have a] throw-in – that is not difficult, that is not hard, that is pretty simple to stay with your man and he just runs off Pogba with ease and he knocks it across with a simple tap in.
"That tells you everything that's wrong with this football club at this moment in time. So, so easy. It's going to be very difficult to change it."