Paris Saint-Germain squandered a chance to ignite their stuttering Champions League campaign as Napoli came from behind to earn a 1-1 home draw on Tuesday.
Neymar was lively in the opening exchanges and carved out a promising early chance for Marco Verratti, which drew Kalidou Koulibaly into a crucial block.
The Brazil star also provided the pass for a thumping Kylian Mbappe strike that flew across the face in the 23rd minute.
For all their attacking riches, PSG had wing-back Bernat to thank for breaking the deadlock with a composed close-range finish, Mbappe having bamboozled Raul Albiol before supplying the cutback.
Napoli started the second half with purpose but ran into an inspired Buffon, who twice denied Dries Mertens in quick succession.
Eventually, the incessant Napoli pressure told. Buffon bore little blame for clattering into Callejon and, with lasers shone in his eyes, could do nothing about the emphatic Insigne spot-kick that put Napoli in the driving seat.
There was some late frustration for the hosts as they lost Mertens to a serious-looking shoulder injury in a match that saw Marek Hamsik become the club’s all-time appearance leader.
What does it mean? PSG fail to dispel flakiness fear
Accusations of a soft centre have long been levelled at PSG and, though they clung on here for a handy point, their inability to see through a period of pressure will only heighten the focus on the team’s character.
Callejon showcases class
He was frustrated in his attempts to get on the scoresheet, but attacker Callejon deserves plenty of credit for pouncing on Silva’s error as the most important moment of a consistently dangerous display.
Silva slip-up costs PSG
Silva will receive no sympathy for the error which came from nothing and handed Napoli their equaliser.
Napoli will aim to stay in touch with Serie A leaders Juventus when they visit Genoa on Saturday, while PSG head to beleaguered Monaco the following day.
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