According to an insider source, the Italian club is allegedly owing Onazi his deserved May and June 2016 salaries. Although he has since moved to Trabzonspor FC in Turkey, the Eagles star demands his unpaid salary to be credited.
The source said:
"Onazi is taking Lazio to FIFA over unpaid salaries.
"He is not happy with them and has contacted Lazio over the issue but it seems they are not ready to pay. He served them letter to this effect already."