Udinese winger Alexis will be leaving the club in the summer, according to his agent, leaving Europe's top clubs on high alert.
Sanchez, 22, has attracted the attention of Inter Milan, Manchester United, Manchester City, Chelsea and Barcelona for his performances in Serie A and at the World Cup with Chile.
His agent Fernando Felicevich told FCInterNews: "Despite everything that has been said and written, neither I nor the club have received offers for Sanchez.
"Thirty million euros? It is not for me to say what is a fair valuation. Not only [Sir Alex] Ferguson spoke well of him, but Leonardo and Roberto Mancini. But that does not mean he'll land in one of the teams coached by these names.
''In any case, I can confirm this: in June Alexis will change teams."