Agent Alejandro Camano insists he will be staying with the Serie A club.
"I know nothing about the Real Madrid interest as well as the other clubs' ones. No one got in touch with me," Camano told Calcio Mercato.
"Borja Valero has had a great time in Florence and, to date, there is no chance that he leaves the club which has invested so much in him.
"Now I'm in Italy and I'll meet again with the Fiorentina leaders.
"We are very satisfied with his first season in Serie A and I'm not at all surprised by his great performances."