Napoli star Ezequiel Lavezzi admits they enter a decisive fortnight at home and in Europe.
After defeat to Champions League opponents Bayern Munich, Manchester City's 3-0 win away to Villarreal knocks Napoli down to third place in Group A, so their head-to-head at the San Paolo will be decisive.
Lavezzi said: "We are certainly still fighting to qualify and are in the race with Manchester City, but also have to focus now on Sunday and a very important Serie A game for us against Juventus.
"We are a little tired, but fixtures like this fire you up."