5) Davy Klaasen- Everton
Yet another Everton failed signing in 2017/18 is Davy Klaassen. Everton signed the midfield play-maker from Ajax after widespread praise but he has failed completely. In-fact he has been so bad that Everton wanted to loan him out in January 2018, and they told him he wouldn’t play if he stayed in favour of earning higher wages. Klaassen has found himself out of the team this season and has failed to even make the bench. He has only made four appearances this season for Everton and has to be on my Top 10 most disappointing Premier League players in 2018 list.