Paris: A Jose Callejon goal helped Napoli ease into the Champions League group stage, while Sevilla also went through and Celtic suffered a scare in Kazakhstan before winning their play-off tie.
Third in Serie A last season, Napoli were too strong for Nice, winning 2-0 in France with Callejon and Lorenzo Insigne both scoring as they progressed 4-0 on aggregate.
Beaten by Real Madrid in the last 16 last season, Maurizio Sarri's side took the lead when Marek Hamsik deposited a low cross from the left for Callejon to convert at the back post in the 48th minute. Dries Mertens then hit the post before Insigne sealed the Italians' win a minute from time. "Napoli must keep on playing in the Champions League every season, because this is where we belong. We are happy with the qualification," said Insigne.