Napoli coach Gennaro Gattuso claims Victor Osimhen is not smiling after he missed their Europa League trip to AZ Alkmaar.

The 21-year-old suffered a dislocated shoulder during Nigeria’s Africa Cup of Nations qualifying fixture against Sierra Leone on November 13, after scoring a goal in the 4-4 draw at the Samuel Ogbemudia Stadium.

He has consequently missed Napoli’s last three matches across all competitions, which include a 4-0 win over Roma in the Serie A and a 2-0 victory against Rijeka in the Europa League.

The Parthenopeans left Naples on Wednesday for Alkmaar and Gattuso has revealed how Osimhen felt after he was dropped from his 20-man travelling squad.

“It bothers me to see him mad and not smiling,” Gattuso said, as per Gianluca Di Marzio.

“He is upset and that is normal.

We must ease him back in, we hope he will heal as quickly as possible.”

Osimhen has scored two goals in six Serie A matches since he arrived from Lille in the summer, however, Gattuso reserved praise for Dries Mertens as he chases his first goal in the European competition this season.

“Mertens pushes and helps his teammates even when his play is spotty,” he said.

“He knows that he hasn’t been scoring but he is critical for our team spirit.

He helps keep us together and he should improve.”