The 19-year-old Brazilian spent last season on-loan at Malaga in La Liga, and admits that his first-team opportunities may still be limited at Chelsea, and would consider a temporary move to another English club.
"It's hard to say how often I will play or if I will play at all," he told ESPN Brasil.
"We have to wait and see if any Premier League clubs will be interested in me."
Piazon also welcomed new boss Jose Mourinho to Stamford Bridge, and is relishing linking-up with the Portuguese supremo.
"I am excited, everything will change," he added.
"It will be very good to work with someone like Mourinho."