Chelsea take on Sporting Lisbon in the Champions League on Tuesday evening, with Jose Mourinho’s side looking to add to the point they won against Schalke last time out.
The Blues have begun their Premier League campaign in outstanding form and are currently three points clear at the top of the table, but they will have to be at their best to take a much-needed three points from their trip to Portugal.
Here are four Sporting players Chelsea will have to pay particular attention to if they want to come away with the win.
The on-loan Manchester United winger has started his second spell at Sporting in impressive form, scoring a late wonder-strike to ensure a point in their opening Champions League match against Maribor and also grabbing his first goal back in the Primeira Liga against Gil Vicente at the weekend.
He will have a point to prove knowing that plenty of United fans are likely to be watching on Tuesday, and his experience in Europe could bode well for their current campaign.
Chelsea will know he is capable of moments of magic even if he is performing erratically, which was often the case at Old Trafford.
The Algerian international was strongly linked with a move to the Premier League this summer but he ultimately remained in Portugal and already has two goals and one assist in four games.
The 26-year-old scored 10 times for Sporting last season and this campaign he should reach double-figures with ease. He will cause John Terry and Gary Cahill plenty of problems on his home ground.
Not so much a goal-scoring threat as a reason for Chelsea’s forwards and midfielders to get ready for a battle, William Carvalho is, quite simply, Sporting’s best player.
Another who somewhat surprisingly remained in his homeland following a summer of speculation, he will relish the chance to battle Chelsea’s formidable midfield and it will be interesting to see how he performs against the likes of Cesc Fabregas and Eden Hazard.
Unlikely to start the match, the 20-year-old winger could come on late in an attempt to change the match if required. Mane enjoyed a breakthrough season last year and he has all the attributes to become one of Europe’s most exciting wide-men.
If Chelsea are leading 1-0 or Sporting want to chase the win in the final 10 minutes, do not be surprised to see Mane introduced. Able to play on either wing or up front if required, he could make the difference if the Blues are not careful.