One of the things I don't get is why we persist with him at centre forward. i get that he is good at running in behind, great pace, and he can finish, well.. sometimes.
But the thing sticks out is, when there's an attack on, not a counter attack with a whole half to run into, but a normal attack with defence behind the ball, he has no awareness of what's around him at all. He stands there flat footed, staring at the ball. He needs to learn the meaning of the term 'come alive in the box' because he is offering nothing when those attacks are on. He's not creating space for another player, he's not putting himself in the best position to receive a pass, and if he does get it he's so flat footed he just loses it instantly.
Lukaku might have an appalling first touch and not be great at holding the ball up but he is a better CF than Rashford and does at least have a predatory instinct and so why he got hooked before him last night, or was shunted out wide to accommodate him, is beyond me.