Arturo Vidal has refused to commit his future to Juventus, insisting he wants to remain fully focused on Chile's progress in the World Cup.
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Vidal, 27, starred for Chile as they beat world champions Spain 2-0 to seal their qualification to the competition's knockout stages.
Real Madrid and Barcelona are both reported to be keen on the midfielder, but when asked by Sky Sport Italia if he would remain in Turin next season, where he has won three consecutive Serie A titles, Vidal sidestepped the question.
He said: "I don't know. I'm happy at Juve, but we're at the World Cup now and I don't want to think about anything other than playing at the World Cup."
Vidal, who still has three years left to run on his contract with the Bianconeri, recently returned from knee surgery in time for the tournament and claimed he is feeling fitter with every game.
He also expressed confidence in Chile's ability to continue causing upsets in the World Cup after comfortably winning their first two games.
"We're a young side who want to win the World Cup," Vidal added. "We are the surprise of the tournament and I really do think we can win it.
"I'm delighted and I'm also feeling great -- my knee's not giving me any problems and I played a great game today. It was important for me to get some minutes under my belt."