All our attack is based on him, basically our attack strategy is throwing long balls to Lukaku hope he can manage the 1 or 2 CBs breathing on his neck, control de ball and distribute it to our wingers.
He is being used like he was Diego Costa or Drogba, and eventhough he has the physique to play like that, he isn´t that type of player. He is being critiziced because he isn´t able to deliver in a role that clearly doesn´t suit him.
He is not allowed to have a bad game because all our attack relys on him and if he does not deliver all our attack falls apart, we don´t have a plan b when it comes to attacking (other than throwing Fellaini up) , thats why Mourinho will not sustitute or bench him, because no other player can remotely fill that role. Just remember last season when Lukaku was injured and how toothless our attacked looked.
It´s not coincidence that players that show great skills in the national team, like Lukaku and Rashford, or players that used to shine on other teams like Alexis, just don´t shine under Mourinho´s system. Mourinho requires a very specific type of players to play the way he wants and he has proven to be incapable of changing his strategy, he prefers to adapt players to his system rather than adapt his system to the players eventhough its clearly not working.
I just can´t stop thinking how would Lukaku deliver in an attack that produces him the oportunities. How would he look in Liverpool or City? He will never shine under this particular set up and he won´t improve much since we are not using him to him strenghts, we are just highlighting his weaknesses.