Napoli president Aurelio De Laurentiis has promised a 10 million bonus if the club qualifies for the 2025 Club World Cup according to Corriere dello Sport Fabio Mandarini.
This can only be done if Barcelona are relegated from the Champions League so Tuesday game should be a big boost for the Serie A champions.
Former Napoli defender Koulibaly says playing at home is not good for Barca.
In addition to the prize money Napoli will also receive 10.6 million from UEFA if they reach the quarter-finals. Winning Barca means they get a total of 20.6 million.
Instead Barcelona must reach the quarter-finals of the Champions League to meet the board expectations of the season set at the start of the campaign.
The first leg is 1-1. The second will take place on Tuesday March 12.