Martinez has been linked with a move to the Viola as part of a deal for striker Alberto Gilardino.
“There is absolutely no truth to the rumours about Jorge joining Fiorentina,” Daniel Delgado told Tuttomercatoweb.
“I have heard from no one at the Viola.
“Jorge wants to prove his worth at Juventus, and is not thinking about leaving. He has had a series of injuries without having a period of tranquillity.
“We are still only early in the season, having just played the eighth match of the campaign. He is only thinking about recovering, and getting better in order to contribute to the Bianconeri cause.”