One of my client offers me to pay through paypal , but paypal is not supported in our country . I have a master card which is provided by payoneer . Is it possible to transfer fund from paypal to my mastercard ?
PayPal payments are credited to a PayPal account. PayPal doesn't let you pay arbitrary banks or credit cards, that defeats the purpose of PayPal and there are other services which can do that cheaper or with less hassle.
You need to find another mutually available and satisfactory option with your client.