#1 Willian
At this point in time, the best way to describe Willian's Chelsea career is probably the phrase "qualified success". The Brazilian winger has impressed in fits and starts since he joined from Anzhi Makhachkala in 2013 for £30m
His best spell for the club came during the 2015-2016 season; Jose Mourinho's last hurrah as Chelsea boss. Willian was the one shining light in a season where everything went dark for the club, this won him the club's Player of the Year award.
While he has played important roles in two Premier League title wins under Mourinho and Conte, consistency has never been his forte. Willian's dithering on the ball and his poor decision making have broken down more attacks than can be counted.
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Over-reliance on beating his man for pace and not making the right decisions have seen his contributions drop as the season's pass. The Selecao international has been in decline for a couple of seasons now. He has struggled in Maurizio Sarri's system where the emphasis is on playing the ball forward with quick passing and intelligent movement.
While Hazard's future is still uncertain, the addition of Christain Pulisic and the presence of Callum Hudson-Odoi means the club can feel confident about a future without the Brazilian.