It seems it will be hard to guess the outcome of this game. Both teams can win, and a draw is very likely.
As for Napoli, Gattuso led the squad to recent sensational victories over Juventus and Inter. Barca, on its hand, does not promise the moon but focuses on the game. Note that the Catalans have only one victory in the last five away matches of the Champions League playoffs.
We recommended betting on fouls. Napoli, of course, will not be keeping the initiative and will defend as hard as possible.
Barcelona had an advantage in ball possession in the last four games and fouled 85 times total (average 21.2 per game). Doubtful, something will change at San Paolo. Moreover, Felix Brykh whistles and puts his hand into the pocket more often than most of his colleagues.
Bet on Napoli to foul total over (12.5) with a rate of 2.00.