La Blaugrana agreed a deal to sign the highly rated teenager in September 2019 but allowed him remain in Gran Canaria for the 2019/20 season.
He eventually joined up with Ronald Koeman‘s squad at the start of the current campaign before going on to make an incredible 40 appearances in an eye-catching debut campaign in Catalonia.
However, the call up means an additional payment has now been triggered as part of his original move, as per reports from Marca.
Barcelona paid €5m up front for the 18-year old but the deal includes a series of add ons that could see his final fee rise to €22m.
Las Palmas have already received an extra €4m after playing more than 25 games in all competitions in 2020/21, with additional clauses relating to appearances for Spain and Barcelona’s success in La Liga and the Champions League.