Pierre-Emerick Aubameyang could make his debut from the start in Chelsea's opening Champions League Group E game against Dinamo Zagreb.
Blues boss Thomas Tuchel says his new signing is "invited to prove a point" after moving from Barcelona in a £10.3m deal on transfer deadline day.
Aubameyang will need to play in a mask after suffering a jaw injury during a violent robbery at his home last week.
He only managed eight minutes for Barca this season.
Tuchel says the former Arsenal captain, 33, has to be "managed" and "needs minutes to get his full fitness and rhythm".
The German added: "He cannot play 90 minutes so it's on us to find a solution if he comes from the bench or he starts."
