Chelsea boss Jose Mourinho is wary of asking too much from Oscar.
Oscar played 78 minutes of the west London derby after recovering from an ankle injury that had kept him on the sidelines in recent weeks. Mourinho said: "The talent is there all the time, but the physical top condition to express the quality he has is not always there.
"We have to take care of him. He's a young boy. He's not a natural physically strong man, suffers with the accumulation of matches, suffers with the difficult weather we had."
