According to Sky Sports, Ighalo has agreed a two-year contract with the club having received approval from the Saudi Pro-League.
The 34-year-old is expected to undergo a medical this week.
He joins as a free agent having left Al Hilal at the end of his contract in June.
Ighalo, who was the top scorer in the Saudi Pro League in the 2021/2022 season, recently admitted that the ongoing exodus of footballers to the Saudi Arabian league was driven by money.
