Clasie is hot property on the transfer market and has attracted interest from several clubs around Europe.
"We will talk to Clasie about this option as soon as he returns from international duty. Fiorentina are a great club who play one of the best styles of football in terms of technique.
"The presence of a fantastic player like David Pizarro could also help him to grow and learn a lot in Florence.
"Fiorentina could be an important opportunity for Clasie, but there are also English and Russian clubs interested."