Speaking to Cadena SER, Caparros said: "N'Zonzi wants to leave, but he is aware that he has a two-year contract with us. I talked to him, I have a good relationship with the player, even during the World Cup we have been in contact and we have not talked about Roma.
"Eventually he can go away, but it is also true that we have told him that he has two years of contract. He has become an international and had the chance to be a [world] champion, successes that have arrived for him while at Sevilla. He has a clause.
"If in the end someone will come to ask for the player, that someone knows that there is a clause, or they will have to make an offer that is very close to it. N'Zonzi knows what we want from him.
"He is a footballer who is on the market and knows that he has to bring us an interesting offer for us to look at it, and if he doesn't, then he has two years of contract left."
N'Zonzi has spent three years with Sevilla, scoring eight times in 135 outings.