There have been no reports of an injury so the Belgian worldwide is probably being rested ahead of Chelsea's upcoming game against West Ham on Sunday while they also have a league and cup double-header coming up against Liverpool. "I think he is the image of the team, a team that played very well in long periods in the first half".
Winston Reid, Manuel Lanzini, Andy Carroll are all out - while Javier Hernandez and Marko Arnautovic are doubts.
Eden Hazard and David Luiz are likely to return after being rested for the trip to Greece, while Mateo Kovacic should be fit after a dead leg.
But with Kevin De Bruyne out of action with a knee injury, the 43 million pound ($56.3 million) signing from Monaco has been asked by Pep Guardiola to play in a more central midfield role and he appears to be relishing it.
Fulham fell to a 3-0 defeat against Manchester City last time out but, back on home soil, Slavisa Jokanovic's charges will have their sights firmly fixed on securing their third competitive win of the season on their own patch.
"It's impossible to start better than Chelsea have, but every game is different", he said.
Chelsea caved in to Thibaut Courtois's demands to join Real Madrid, but crucially didn't do the same for Eden Hazard. We must be confident at home, ' the experienced manager said. We will try to do the same as the last game. I do, I think he's fantastic.
West Ham have only lost two of the past seven meetings in all competitions (W3, D2). The Chelsea boss has taken this decision as the Belgian star complained of fatigue after the win over Cardiff at the weekend.
For the first time since May 2017, Arsenal has successive away wins in the league. However, after three two-legged ties they failed to make it to the group stage and their continental exertions may have influenced their poor start in the Premier League.
The Merseyside club won the last of their then-record 18 English titles in 1990 - before the Premier League was formed - but optimism is growing after a statement 2-1 win over Tottenham Hotspur kept them on maximum points.
Arnautovic was West Ham's top scorer last season, and registered a goal and an assist at Goodison Park.