Antonio Conte has challenged Alvaro Morata and Ross Barkley to show their worth to the club.
Morata joined Chelsea in the summer and impressed in the opening months, with 10 goals in the league, however, he has not found the net since boxing day.
Barkley joined in January and has not had many opportunities to prove himself, with hamstring injury proving to be a problem.
“He has to work and to recover the best form after an injury in his back,” Conte told reporters ahead of Sunday’s trip to face league leaders Manchester City.
“He has to work and have patience and we must have patience. But the only way is to work.”
“Ross Barkley, in this week he trained with us. Now he has recovered from his injury and he will come with us for Manchester City,” the Italian added.
“Then I don’t know if I decide to find a place on the bench for him or in the stand for another week.”