Chelsea boss Antonio Conte admits he's holding back Charly Musonda.
Musonda returned from a loan spell at Real Betis earlier this season, but won't feature in the FA Cup tie with Wolves.
"Charly Musonda is not in the squad," the Chelsea boss said.
"He's working very hard and very well in training and he's having supplementary work with the physical coach.
"Tomorrow he will play with the Under-23s against Man City. Now I think it's better for him to play a whole game and stay with us.
"In the next games if he deserves to come with us I'm open to that eventuality."