In his first season, Sarri brought in Elseid Hysaj, Pepe Reina, and Allan. The trio would go on to be first-team stalwarts for the following campaign, as Napoli finished runners-up to Juventus. Sarri extended his stay at the club until 2020 on 27 May 2016. Two months later Juventus would manage to sign Gonzalo Higuaín from Napoli for €90 million in the summer, who had managed to equal the record for most goals scored in a singular Serie A season, with 36.
However, Sarri vetoed the possibility of spending the money on a like-for-like replacement, instead, spending sparingly on weaker positions in the side to improve on depth, while tinkering with his squad to compensate for the loss of Higuaín. This was achieved through the positional change of Dries Mertens, originally a wide-forward, who was played more centrally the following season.This worked to great effect, as the Belgian netted 28 goals as the club finished 3rd in 2017, while Sarri was voted the league's coach of the year, and received the Enzo Bearzot Award.
If his system work, he can do thinks like that, turning Dries Mertens becoming prolific striker
And that time what our management does? We sold Pogba, our key player in midfield and bought Higuain that excel with his system
and until now we are begging for team to take Higuain from us with no result
I wonder if Allegri can make player like Mertens scoring 28 goals, but for an undeniable facts Allegri can make world class player like Dybala only have 5 goals and 2 assist in a whole serie A season.