Napoli president Aurelio de Laurentiis has declared Manolo Gabbiadini is up for sale.
Gabbiadini has been linked with a move to Everton next week.
“It's not that he wasn't able to express himself, but rather different things are asked of him and they are not in his wheelhouse," De Laurentiis told Radio Kiss Kiss.
“Gabbiadini scored many goals at Sampdoria and also here under Rafa Benitez, so with a system other than the one Sarri uses he should have a better chance of being decisive.
“I thought that his performance in the first season was due to physical issues, but that wasn't the case. He is simply not suited to Sarri's football.
“Something that doesn't fit cannot be made to fit, like an out of key note in a harmony. Sarri cannot lose points to help one player improve."