Guaita is being linked with Arsenal.
"Guaita is a world-class keeper and we have no need to sell, but we would study the price of any offers," Salva told Las Provincas.
"He is not happy with being a substitute sometimes, and his agents have reported that he could find a way out.
"This does not sit well with the board - if you do not play every week, you have to make sure you keep respecting Valencia."
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