Chelsea attacking midfielder Willian is fully focused on doing well in the Copa America Centenario amid reports that he will join Manchester United in the summer.
Reports in England have claimed that the Brazilian will be one of Jose Mourinho's main targets during the summer transfer window but the 27-year-old says he is not interested in the rumours.
"I don't think about that [the rumours]," he is quoted as saying by Express Sport.
"I'm here on Copa America duty with Brazil and I'm not here to do interviews about other things.
"[Extending my Chelsea contract?] That is something my agent deals with."
In a separate interview with The Sun, he said: "Jose [Mourinho] is one of the most successful coaches in the world and Manchester United will be stronger with him as manager.
"I played some of my best football under Mourinho. He is a special coach and I have a great relationship with him.
"Winning the Premier League with him was one of the highlights of my career. I was sad things didn't work out after that."