Spalletti claims that Napoli have "worked harder than anyone" in the last few years and therefore should be rewarded by claiming the scudetto.
"Antonio Conte's Juventus is stronger than Walter Mazzarri's Napoli," Gazzetta dello Sport quotes Spalletti as saying. "He has more decisive players, a better bench and has more players accustomed to such big games.
"However, in recent years, Napoli have worked harder than anyone. President Dino De Laurentiis and Mazzarri must live this moment without fear.
"For these reasons, it would be nice if Napoli win the title."
The potential title decider between the two clubs kicks off tonight at 7.45pm.