City more than met Del Nido's expectations in terms of an offer for their 27-year-old winger Navas.
"I think this is a great deal for both parties," he said. "They player had said personally to us and then publicly to the media that he wanted to leave. He believed his time in Sevilla was over having contributed all that he could.
"The price at which we have sold Jesus Navas is an amount much higher than we thought they were going to offer, especially as there was only one bidder."