I personally blame Jose for Lukaku's failure. I think he expected Lukaku to be a player in the mold of the kind of Drogba or Costa or Milito, hard front men, technically sound who frequently make a defender's life hell for 90 minutes. But Lukaku isn't like that, despite his size he isn't the striker in the mold of above mentioned. He has a good left foot and likes classic wingers putting in crosses for him to get at the end of, he isn't a warhorse like Drogba or a constant niggling threat like Milito or Costa. United plays with inverted wingers and expects Lukaku to link up play. He has one of the worst first touches for a striker, and vision is average at best. If United reverts to wing play with classic wingers running down the flanks and putting in crosses, Lukaku will be a huge threat. At Everton he had Coleman, Baines and Deulofeu who used to put in wicked crosses in the box. But we don't have such personnel in the team. Either Jose changes his tactics or start playing Sanchez or Martial as the CF to get more productivity up front.
What also bothers me with Mourinho is what he sees in his players, he seems to value power and size over other attributes, with mata being an acception. lukaku much like allot of our players its a cycle, rinse, repeat, recycle, they have a few good games, when it comes to the crunch they fold like a team of losers, the manager sticks up for them no matter how poor they playing, they score a few goals, repeat. What also really bothers me with Mourinho even more, he targets the more talented players for much worse scrutiny who are key to our success, and defends the limited players like their his kids, young, fellaini, lukaku, matic has bloody poor for months, and gives the likes of shaw, pogba, martial who are our future of our club far harder treatment. Fact remains lukaku is not good enough for united, and we going to be stuck with this player for 18 months because Jose is that stubborn, begging fellaini to stay, sometimes everything just boggles the mind with Mourinho.