Pedri hopes Lionel Messi stays at Barcelona so he can "learn from the best", though the new signing has not ruled out a loan move for the 2020-21 season.
Barca confirmed a deal with Las Palmas to sign the highly rated 17-year-old in September 2019, but he stayed at the second-tier club for the remainder of the campaign.
He was finally unveiled as a Barcelona player on Thursday, however, with president Josep Maria Bartomeu and new sporting director Ramon Planes – who has replaced Eric Abidal in the role – present at the ceremony.