Luiz could barely walk following Wednesday night's thrilling 4-1 extra-time win, having played the full 120 minutes of the last-16 second-leg clash. But the defender, who arguably had one of his best games in a Chelsea jersey, insisted he did not need a rest for Sunday's cup quarter-final.
A limping Luiz said: "It's my ankle. I hurt it when I got a kick but that's normal. This is football. I'll go to the training ground for treatment to help me for Sunday. I want to play."
Chelsea could make wholesale changes after their midweek exertions, including resting captain John Terry, who failed to complete the Napoli match.
That was only the 31-year-old's second game back following his remarkable recovery from knee surgery but his leadership qualities have already shone through.
Luiz said: "For Chelsea, it is important to have all the players back from injury.
"JT is the captain and a legend for the club. He is a fantastic player and of course it makes me happy when he plays."
Another player deserving of a rest is Ramires, who never stopped running on Wednesday night.
Luiz said of his former Benfica team-mate: "The last 20 minutes, it was impossible for some of us to walk and he was running box to box. This is Ramires.
"He is unbelievable. He is a fantastic player I'm happy because he plays for my team."
Source: PA
Source: PA