David Luiz
Following John Terry's departure to Aston Villa, David Luiz was expected to step up and take responsibility as he was one of the most senior-most players in the squad. However, the exact opposite happened.
A series of lethargic performances from the Brazilian demoted him to the bench and there were reports of a rift between the player and Conte.
He played the full 90 minutes only once since game week 10 and to make matters worse, a recurring knee injury kept him out of the game for the majority of the second half of the season.
Danny Drinkwater and Ross Barkley
Two signings that epitomised Chelsea's failed transfer window. While January signing Barkley can still come good for them in the long run, there was no meaning in splashing out close to £40 million on Drinkwater.
The duo has a history of recurring injuries and was bought at a time when they were continuing rehabilitation for existing injuries. This hampered their progress to a large extent and they have failed to make their mark this season.
They have played just 652 minutes of football in the league combined, which speaks volumes.