It's safe to say the 2015/16 season was bitterly disappointing for Chelsea.
The defending champions finished 10th in the Premier League, behind the likes of Stoke City and Southampton, as they struggled to recapture the form that had made them so dominant the previous campaign.
To highlight Chelsea's dramatic fall from the top, the Stamford Bridge-based outfit finished on 50 points this season, 37 fewer than their title-winning tally.
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Their disastrous run of form ultimately culminated in the sacking of Jose Mourinho, the most successful manager in the club's history, before Christmas.
Antonio Conte is the man entrusted with restoring Chelsea to the summit of English and European football alike, but his job is far from easy with multiple issues to be addressed.
Here we take a look at three players that Chelsea should let go this summer.
Much was expected from Oscar when he signed for Chelsea in July 2012, for a fee believed to be around £25 million, but the Brazilian playmaker has failed to live up to the lofty expectations.
Oscar has been patchy at best during his time at Chelsea, brilliant in some games, and practically non-existent in others.
With just three goals in 27 league appearances, Oscar has most definitely enjoyed his worst campaign in the blue of Chelsea so far.
The former Internacional player has great potential, but has been unable to truly fulfill it. Players like Willian and Cesc Fabregas were preferred over Oscar towards the end of the campaign, which could mean his time at Stamford Bridge is coming to an end.
Branislav Ivanovic has been a great servant to Chelsea ever since he joined the club in 2008, but his recent performances suggest that the Serbian defender might be past his best.
At 32, Ivanovic is one of the few defenders in the Chelsea back line who seem to have lost their pace and dominance. Chelsea conceded a mammoth total of 53 goals last season, 21 more than they conceded the season prior.
Ivanovic particularly struggled against quick, tricky wingers early on in the season and never really recovered from that.
Incoming manager Antonio Conte is expected to make changes in the squad and Ivanovic could be one of the casualties, despite signing a new one-year deal at the end of last season.
Diego Costa is certainly one player that splits opinions among the Chelsea supporters. Some believe that the Brazilian-born forward is one of the best in the business, while others seem tired of his infamous antics on the field.
Unfortunately for Costa, he made headlines for the wrong reasons in the 2015/16 seasons, with suspensions and regular bust-ups with opposition defenders. Costa seemed to be consumed with engaging war with defenders, rather than putting the ball in the back of the net.
Costa scored 12 league goals in 2015/16, eight fewer than he managed in his debut campaign.
Costa's erratic nature seems unsettling for the squad, and new manager Antonio Conte might let the volatile forward leave this summer.
Who do YOU think Antonio Conte should sell this summer? Have YOUR say in the comment section below!
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