The 25-year-old has been strongly linked with the likes of Manchester United, Arsenal and Southampton.
The Argentina international has fallen out of favour under Miroslav Djukic at the Mestalla.
Banega’s agent Marcelo Simonian told NapoliCalcioLive.com: “I can only tell you that we are already talking with several clubs in relation to the next window.
“In the next few days I will be travelling to present all the options to Valencia.”
Inter Milan and Napoli are also reportedly keeping tabs on Banega’s situation at Valencia.