Kai Havertz insists he will always be ready to deliver for Chelsea.
The German came off the bench to score Chelsea's third goal in their 4-0 win over Malmo on Wednesday night.
Speaking to BT Sport, Havertz said: "For us it is a very good result, to score four in our stadium is always good, it gives us confidence, we have to keep on going, recover well and be fresh on Saturday.
"It was a good goal, Callum [Hudson-Odoi] did a good assist, the ball was very far but I tried to get it, I knew the goalkeeper would go down so the only chance I had was to try to dip it.
"I came from the bench, you always have to be ready, it is always tough to come in but I tried to do my best in the second half to score a goal, so it is a nice feeling."