The Blues began the defence of their title with a 1-0 victory at home to Zenit St Petersburg.
But they couldn't follow that result up with a win as they lost by the same scoreline to Juventus two weeks later.
Thomas Tuchel's side are back in Champions League action against Malmo on Wednesday evening.
They know a win in front of their own fans would be huge in their attempt to qualify to the knockout rounds.
A loss, however, would give them an uphill task of sealing progression with three group games remaining.
Ahead of the game, UEFA have sent through a list of languages that every player speaks so media from around the world know who they can interview.
View every language that Chelsea players can speak below, per Stan Sport producer Nick Stoll.
The first thing that immediately stands out is that Lukaku can speak so many languages that they don't even fit in the box.
UEFA's list reveals he can speak eight languages: French, German, English, Spanish, Portuguese, Dutch, Flemish and Italian.
He can, in fact, speak nine languages. He also speaks Lingala.
Footballers often have a reputation for not being the brightest of people but Lukaku certainly doesn't fall into that category.
The fact he can speak nine languages is just remarkable and conveys how intelligent he is.
Elsewhere, Mateo Kovacic can speak give languages: Croatian, Spanish, German, Italian and English.
Four Chelsea players speak three languages fluently: Marcos Alonso, Cesar Azpilicueta, Thiago Silva and Jorginho.
While nine of Chelsea's 25-man Champions League squad speak just the one language.News Now - Sport News