Brazil international Luiz Gustavo has told kicker he is delighted to be linked to Real Madrid but remains focused on his current club Wolfsburg.
The 27-year-old joined Wolfsburg from Bayern on a five-year-deal during the last days of the 2013 summer transfer window.
Gustavo helped Die Wolfe qualify for Europe for the first time since 2009, with his side finishing fifth behind the big four German clubs Bayern, Dortmund, Schalke and Bayer Leverkusen.
The holding midfielder returned to Wolfsburg last week, despite a 35 million-euro release clause allowing him to leave the club until the end of July that he decided not to trigger.
"There have always been many rumours in my career. That was also the case during my time at FC Bayern," he said. "My agent did not inform me [about possible interest from other clubs], and that's why I am totally calm. And moreover I am really happy at Wolfsburg."
However, Wolfsburg's recent signing of Atletico Madrid midfielder Josuha Guilavogui, 23, has led to further speculation over Gustavo's Bundesliga future.
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"I can't change that. And maybe it's normal that clubs are interested following the World Cup," Gustavo said. "It delights every footballer to be linked to such clubs."
At the 2014 Brazil World Cup, Gustavo was a mainstay for hosts Brazil. He was also part of the Selecao XI which suffered the historic 7-1 semifinal humiliation against Germany.
"That was the worst defeat of my career," Gustavo said. "It will take a long time until I'll be able to forget that day. But life goes on regardless. Now, I am fully focused on VfL and the upcoming season," he said.
The midfielder added that he hopes to continue to play a role for Brazil under the new coach Carlos Dunga.
He said: "I don't know our new coach personally. It's now important that everything runs smooth in Wolfsburg. But it's also clear: The national team has always been my goal and will always remain my goal."