Speaking during a press conference on Thursday, Hierro said: "Ronaldo's contract with Al Nassr runs until June 30. We will work to renew his contract so he can continue with us, and there are many clubs interested in signing him. We are negotiating with Cristiano Ronaldo to renew his contract. God willing, we will find a solution.
"Ronaldo's presence from the beginning is a national project. Cristiano has opened up soccer in this country to the world. It's phenomenal that he had the courage to come here, stay here, and open up the Saudi Arabian league to the world. It's an extraordinary milestone.
"Since his arrival, top-level players have come here. He opened all the doors. From there, the people at the top are doing an extraordinary job. They're pushing forward. We are in contact to renew his contract and hope he continues with us."