Chelsea interim manager Guus Hiddink says striker Diego Costa could face Newcastle United despite suffering a nose injury in training.
The Spain international is the fourth Chelsea player to wear a protective mask this season after Gary Cahill, Nemanja Matic and Cesar Azpilicueta.
But he is expected to be in the starting line-up to face Steve McClaren's men.
"He [Diego Costa] was very unlucky," Hiddink explained.
"It [his injury] was not a tough duel but he put his nose on the back of the head of one of the youngsters from the Academy that we like to participate in our training games.
"They are putting a mask on Diego as well, we are the team with a lot of masks, a Zorro team, and he will come back do some light training this afternoon as he must experience how he is dealing with the form and the fitting of the mask.
"I think he will be available but we must see how he reacts in the light session. I hope, I am not sure, but I think he might be available.
"They [Pato and Matt Miazga] are now at the end of the second week of their "pre-season", both are doing well.
"They are training with us and with extra programmes. Next weekend we will see how their fitness is."