#9 Romelu Lukaku
Another controversial inclusion in the list. However, there are quite a few reasons for adding the big Belgian here. For starters, his performance against the top 6 of the Premiership is terrible, to put it simply.
In the six games that he has played against the top six sides, he failed to score a single goal against them. He may have scored 18 goals this season, but they came in 35 games. For someone who cost £75 million, that is simply not good enough.
Like Morata, he started brilliantly with his new club, scoring 11 goals in his first 10 games for the Red Devils. Since then, however, he has only found the net 7 times in 25 games. It seems as though the blast of goals in the beginning can be regarded as premature galore.