It's safe to say that the 2015/16 season was one to forget for Chelsea, who finished a dismal campaign in 10th position in the Premier League table.
The Blues flirted with relegation during the opening months of the campaign and subsequently dismissed Portuguese tactician Jose Mourinho back in December.
Under interim manager Guus Hiddink, the west London outfit slowly but surely steadied the ship, but it was a torrid season nonetheless.
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There was, however, one shining light: Willian.
The Brazil international, who duly won the club's Player of the Year award last season, produced the goods week in, week out.
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With five Premier League goals and six assists, Willian enjoyed a prominent domestic campaign, but it was in the Champions League where he really hit top form.
Willian struck five goals in eight outings in Europe's elite competition, making his mark with a number of brilliant free-kicks.
With Italy manager Antonio Conte set to arrive at Stamford Bridge on a permanent basis after this summer's European Championships, it's safe to say that Willian will once again be handed a key role ahead of the new campaign.
Chelsea fans will also be hoping to see the dynamic wide-man return to the club fully fit this summer. Well, Chelsea fans may want to look away now. A video has gone viral on social media from Brazil's latest friendly.
Indeed, Willian, who has only been away from the Blues camp for the past two weeks, appears to look out of shape.
As you can see in the video below, the 27-year-old doesn't exactly look great. It could just be a bad angle, of course, but it's safe to say that it has got a few Chelsea fans concerned.
Here's the video and the best reaction on social media:
There has, of course, been some talk that Willian could be reunited with new Manchester United manager Jose Mourinho. If reports are to be believed, the revered coach has set his sights on linking up with the Brazilian once again.
It was clear for all to see that Willian was one Chelsea player willing to fight for the cause under Mourinho last season, but fans shouldn't worry too much at this stage. There's no reason why Roman Abramovich and co. would consider offloading Willian to a rival this summer.
What do you make of the Willian video? Have your say below!