Mourinho's machine has steamrolled through the Premier League this season, but, as of late, hiccups have become a common occurrence.
The losses against Tottenham and Bradford City still hang over Chelsea as an ominous reminder that they are capable of being beaten. Mourinho has opted to improve his squad by letting Mohamed Salah leave, on loan to Fiorentina, and by selling André Schürrle.
To balance the loss of these two fringe players, Chelsea brought in the pacey and electric Colombian, Juan Cuadrado. A right-wing by trade, Cuadrado will have to prove his worth to earn his place in the starting XI, by directly competing with Willian.
Willian's development at Chelsea has turned the Brazilian into an energetic workhorse; a solid player that suits Mourinho's style of play. His incisiveness on the ball and his phenomenal work-rate place him in high-esteem with Blues boss, Jose Mourinho.
Despite his phenomenal work-rate, Willian's offensive contributions are shockingly minimal. With only three goals and four assists to his name across all competitions, Willian is a player whose contributions in the final third seem negligible. However, it's Willian's build-up play and, above all, his seemingly endless amounts of energy that has led to his success with the club.
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When subbed on, Willian adds flair, pace, and urgency in Chelsea's games. Furthermore, Willian is capable of tracking back and helping the often-marauding Branislav Ivanovic, who is sometimes neglectful of his defensive duties.
As it stands, he deserves to be picked ahead of Chelsea's latest signing.