The 21-year-old was spotted posing in a Barca shirt last week, prompting speculation that he had already agreed to join the Catalans after being named as the outstanding player in the Copa Libertadores final.
Rumours continue to do the rounds that he has already signed on at the Nou Camp but the talented midfielder has now gone on record to deny the reports.
"On the Barcelona issue, they really talked to me. We had a meeting, but I want to clarify that we have nothing agreed or defined," he told Esporte Interativo.
"It's a club that I admire a lot. It was only first contact for them to get to know me and my family, and for me to meet them, let's take it easy. There is nothing definite, but we did have a conversation.
"I'm a Gremio player. My agent did not negotiate any contract. That did not happen."