#1 Thibaut Courtois

Thibaut Courtois is a 26-year-old goalkeeper who currently plays for Real Madrid. He has also featured for Belgium 72 times since making his debut back in November 2011.
Courtois arrived at Madrid after having had a solid final season with Chelsea, as well as a strong World Cup with Belgium, but he hasn't shown any of that at the Santiago Bernabeu so far.
In 24 appearances for Los Blancos, he has conceded a whopping 30 goals, only keeping eight clean sheets. Some might argue that eight clean sheets is still a relatively good number, but for a keeper with a defence as strong as Madrid's, he should be doing far better than he is.
The switch from Chelsea to Madrid was a huge move which may have had an effect on Courtois' confidence out on the pitch, given the great pressure that landed on his shoulders once he arrived.
Let's hope things get better for him though, otherwise, he's sure to be swiftly replaced in the future.