Rudi Vata told The News: "Slaven is open to offers and there is interest from Portsmouth.
"There are different clubs who want him but he is very interested.
"Portsmouth have tried to get in touch, but there is no concrete offer at this stage. But the idea of working with and building the club would excite him.
"Slaven is hungry for the right club with the right ambition because he is a hungry manager. He is a person who sets high goals and wants to work hard to achieve them. There are going to be special things from him in the future."