#5 Marcus Rashford
Once regarded as 'one for the the future', he needs to now transition into a 'present generation superstar'. Although still in his early years, Rashford has showed his calibre in the English setup, and must aim to be as much an important factor for Jose Mourinho as he was for Gareth Southgate in Russia.
Now he is out of his teens and gets more playing time on the pitch, he should make his presence felt by being on the score sheet more often. He needs to improve on his shooting, and enhance his goal per shot ratio.
This season could be a make or break one in his career, and therefore it is of utmost importance that he accelerates his game and breaks the shackles holding him back from giving a stellar performance regularly.
Although he has risen through the ranks and is sure to get more PL starts this year, he has definitely got a point to prove, and must aim to score around 20 goals to make his rise evident.
A respectable contribution to the title challenge for Manchester United would be a boon, and will in every way cement his claim to be a genuine leader going forward.