Balotelli had been off the pitch arguing with the fourth official, leaving Nice with 10 men early in the second half, when the unmarked Callejon tapped in at the far post to put Napoli in front.
Nice were temporarily down to 10 men at the time, with Mario Balotelli over by the touchline receiving attention, but neither he nor fellow Champions League victor Wesley Sneijder could inspire Nice, who must content themselves with a place in the Europa League.
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Reports say a number of units from the emergency services attended the scene which also seen five other people taken to hospital. The incident occurred at approximately 6.15pm at the junction of Harcourt Rd and Adelaide Rd.
'I'd love to play against Manchester United at Old Trafford, ' said Sarri, when asked which opponent he'd like to face in the draw.
Balotelli, who missed the first leg through injury, was sluggish, off the pace and never threatened the Napoli goal and the maverick Italian was eventually substituted during the second half to jeers from the home fans.
That ensured the Greek side a 3-1 aggregate win and a return to the Champions League after they fell at this stage last season.
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Either Prime Minister Narendra Modi should sack Railway Minister or should accept his resignation. Ashok Mittal, Chairman, Railway Board has already relinquished his post.
However, late goals from Olivier Ntcham and Leigh Griffiths confirmed Brendan Rodgers' side's passage into the group stages for the second successive season. Sergio Escudero and Wissam Ben Yedder scored for Sevilla.
Marko Marin scored the only goal in Croatia as Olympiacos secured a 3-1 aggregate win over Rijeka and Mitja Viler's strike proved enough for Maribor to defeat Hapoel Be'er Sheva 1-0 and qualify on away goals following a 2-1 loss last week.
He added: "The Europa League is the right level for Nice and it'll be a hard tournament". These lads deserved the Champions League, though.
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The officials concerned have been directed to take necessary steps to deal with any kind of situation", he added. Action will be taken against those who tried to disturb the law-and-order situation in the state.