Ighalo was Watford’s highest goalscorer last season, a feat which earned him a new five-year-contract at the club.

He has however been off form this season, scoring just one goal and has been replaced in the team by his compatriot, .

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According to Calciomercato, the Serie A side is considering bidding for the Nigeria to replace striker Arkadiusz Milik who is out for several months after suffering a cruciate ligament injury on Poland's World Cup qualifier win against Denmark on Saturday, October 8.

Ighalo has twice snubbed several offers from China to remain with Watford.

The 27-year-old in February 2016 revealed that he lost sleep over a huge offer from China that could have earned him £40million over four years.

Hebei ChinaFortune repeatedly came back with a bigger offer anytime he turned them down but Ighalo rejected them to remain in England with Watford.

"I was very close; they made a £10m bid and were offering me over £200,000 a week; a four-year contract. I couldn’t sleep for three days," the Super Eagles striker told in a recent interview.

"That kind of money is not easy to turn down. Some team-mates in the dressing room were saying, “You can’t miss this chance”. But I don’t jump into decisions like that."