The 22-year-old is highly regarded at Camp Nou, but has started just twice for Gerardo Martino's side this season.
"I'll wait to see how this season goes. And if by the end of it I don't play more, then I may have to leave. That will be a difficult step to take though," he told reporters at an Adidas event.
"As the years go by, you want to have more minutes, and I'm no different. Tata met me at home and asked for my patience this season. He's told me that I'll get my chance."
A number of European sides, including teams from the Premier League, are believed to be monitoring developments with the Spanish winger.