Udinese have suggested Manchester United and Chelsea are among Chile winger Alexis Sanchez's biggest admirers.
The South American flyer has been in inspired form for the Serie A side this season and has attracted interest across Europe.
The Italians are hell-bent on keeping hold of their prized asset but would be prepared to do business for the 22-year-old in the summer.
And Udinese sporting director Fabrizio Larini has revealed Premier League leaders United and champions Chelsea are keenly following Sanchez's movements.
Larini told the website Calciomercato: "If Sanchez continues like this he can do well. He is a versatile player, with much room for improvement.
"Chelsea and Manchester United? They are two clubs that have followed him and want him but there are also others."
Inter Milan are among the clubs keen to acquire Sanchez's services and Larini confirmed: "Inter have tried in January just as the other teams did. But the wish of the club is to have Sanchez in Udine until June."
When asked about Sanchez's transfer value, Larini added: "We don't set the figure, the market does. The value of the player is liable to vary."
Sanchez, who is under contract with the Friuli outfit until June 2014, moved to Udinese in the summer of 2008 from River Plate and has scored five goals in 20 Serie A appearances for the Bianconeri this season.